|Publication number||US3524576 A|
|Publication date||Aug 18, 1970|
|Filing date||Dec 4, 1967|
|Priority date||Dec 4, 1967|
|Also published as||DE1807728A1, DE1807728B2|
|Publication number||US 3524576 A, US 3524576A, US-A-3524576, US3524576 A, US3524576A|
|Inventors||Bader I Walton|
|Original Assignee||Swingline Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (35), Classifications (7), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Aug. 18, 1970 l'. WLBADER NAILING MACHINE Filed Dec. 4, 1967 '8 Sheets-Sheet 1 Aug. 18, 1970 13w. BADER 3,524,576
NAILIYNG MACHINE 7 Filed Dec. 4, 1967 a Sheets--Sheet 2 I F l G .5
INVENTOR. PM L nu BAD ATTORNEY Aug. 18, 1970 l. w. B'ADER 3,524,576
MAILING MACHINE Filed Dec. '1, 1967 a Sheets-Sheet 5 INVENTOR. l- Wm-rwv BADQF ATTORNEY Aug. 18, 1970 l. w. BADER 3,524,576
NAILING' MACHINE Filed Dec. 4, 1967 I 8 Sheets-Sheet 4 5r I M Aug. 18, 1970 WfBADER 3,524,575
NAILING MACHINE Filed Dec. 4, 1967 8 Sheets-Sheet 5 Aug. 18, 1970 L w. BADER NAILING MACHINE 8 Sheets-Sheet 6 Filed Dec. 4, 1967 Maw m2, 2. M AM brroe'vsrs Aug. 13, 1970 I. w. BIAD'IERI 3,524,576
NAILING MACHINE Filed D90. 4, 1967 8 Sheets-Sheet '7 NAILING MACHINE Filed Dec. 4, 1967 j 8 Sheets-Sheetg lA/VEIVTOe WA 0700 Baum United States Patent ()1 hce York Filed Dec. 4, 1967, Ser. No. 695,538 Int. Cl. B25c N04 US. Cl. 227-136 8 Claims ABSTRACT OF THE DISCLOSURE A fluid actuated nailing machine is shown. The machine includes a drive piston, a spring return for the piston, and a control valve optionally permitting air to impinge upon the piston. A conduit is provided normally connected to a source of pressure air which permits pressure air to close the control valve. A trigger valve optionally opens the conduit to atmosphere. The conduit is also connected to a raceway within which is disposed a piston which is forwardly movable by impingrnent of pressure air. The piston is connected to a pawl which abuts the leading fastener of a strip of laterally interconnected fasteners. A coil spring is connected to the pawl and biases the pawl rearwardly. A support is provided adjacent the pawl to prevent retrograde movement of a strip of nails when the pawl moves retractably. The support includes an outwardly extending holding portion and an olfset stop portion both adapted to abut the nail next rearmost to the leading nail. The piston, coil spring, pawl and associated structure are disposed within a support portion of a magazine. The support portion has a pivotally movable openable door thereupon. Spaced from the support portion and operatively connected thereto is the holding container portion of the magazine. This structure is formed with a hollow body, an upwardly extending support, and a cover overlying the body and secured thereto. The body and cover are provided with mating openings through which the strip of fasteners issues.
DESCRIPTION OF THE INVENTION This invention relates to a fastener driving machine and has particular application to a fluid actuated nailing machine which is designed to drive round-headed nails into work.
Heretofore nails have either been driven by hand or have been placed in aligned strip form in the magazine of a fastener driving machine. Heretofore it has not been possible to drive conventional round-headed nails in such fastener driving machine since neither adequate magazine structure or adequate feed mechanism has been available.
The invention set forth in this application provides such adequate feed mechanism and adequate magazine structure and thereby permits the driving of round-headed nails into work with the round-headed nails loaded into the machine in the form of a strip of such nails laterally aligned with one another.
In my prior application for patent Ser. No. 616,746, filed Jan. 23, 1967 I disclosed a strip of round-headed nails which are utilizable in a fastener driving machine. The strip of nails disclosed in my prior application is also shown herein but is not claimed in this application. No disclaimer of the subject matter of the strip of nails is intended by the disclosure of such strip in this application.
The invention will now be further described by reference to the accompanying drawings that make a part of this specification.
FIG. 1 is a side perspective view of a fastener driving machine made in accordance with this invention.
FIG. 2 is a detail front fragmentary elevational view 3,524,576 Patented Aug. 18, 1970 of the support mechanism of the magazine of this invention with the openable door thereof shown in closed position.
FIG. 3 is a view similar to that of FIG. 2 but showing the openable door in open position.
FIG. 4 is a cross-sectional view of the nailing machine of this invention. In this figure the piston actuating the driver has been moved to actuating position by pressure air and the driver is shown in the position that it assumes while driving a round-headed nail into work.
FIG. 5 is a cross-sectional view of the valve mechanism utilized to permit pressure air to actuate the piston controlling the driver of the machine of this invention taken along lines 5-5 of FIG. 4.
FIG. 6 is an exploded view of the pawl member of the feeding mechanism of this invention, the support member utilized to preventretrograde movement of the strip of fasteners when the pawl is moved to retracted position, and a round-headed nail which is shown in position to be actuated by both structures.
FIG. 7 is a view similar to that of FIG. 4 but showing the piston, the controlvalve, and associated structure in the normal rest position of the device.
FIG. 8 is a fragmentary cross-sectional view through the piston and attached driver of the machine of this invention taken along lines 8-8 of FIG. 7.
FIG. 9 is a fragmentary cross-sectional view through the trigger valve of the machine of this invention taken along lines 9-9 of FIG. 7.
FIG. 10 is a perspective view of the locking washer which is utilized to secure the driver to the piston of the machine of this invention.
FIG. 11 is a detail cross-sectional view taken along lines 1111 of FIG. 1 of the feeding pawl, the actuating piston and associated structure. In this figure the feeding pawl has positioned the leading nail of the strip of nails into position adjacent the driver of the machine of this invention.
FIG. 12 is a view similar to that of FIG. 11 but showing the pawl in the intermediate position that it assumes when air presure is no longer applied to the actuating piston and the return spring commences to push the pawl into its normal static position.
FIG. 13 is a fragmentary side view of the structure similar to that shown in FIG. 2 but partly in section so as to show the position of the parts when the leading nail has been pushed into position by the pawl adjacent to the driver and prior to the driver driving this nail into work.
FIG. 14 is an exploded perspective view of the holding container portion of the magazine and showing the position of the strip of round-headed nails within such container.
FIG. 15 is a cross-sectional view through the holding container of the magazine taken along lines 1515 of FIG. 1 of this invention showing the position of the strip of rounded-headed nails are disposed about the support therewithin.
FIG. 16 is a fragmentary sectional view taken through the cover of the holding container and associated structure showing the means used to secure the cover to the body of the container.
FIG. 17 is an exploded perspective view of the pawl, the support member utilized to prevent retrograde movement of the strip of fasteners, and associated structure. The structure shown is similar to that shown in FIG. 6 but the support member utilized is of slightly different structure and constitutes an alternative structure to the support shown in FIG. 6.
FIG. 18 is a detail side elevational view of the feed mechanism secured to the body member of the magazine of the nailing machine of this invention.
FIG. 19 is a detail cross-sectional view of the feed pawl, piston, and associated structure. In this figure the piston is in its fully retracted position which it assumes when pressure air is no longer applied thereto and the feed pawl has been urged by the spring member into fully retracted position.
FIG. 20 is a perspective view of the support member utilized to prevent retrograde movement of the strip of fasteners of the type shown in FIG. 17.
FIG. 21 is a cross-sectional view of the magazine of the nailing machine of this invention showing the position of the strip of round-headed nails as such strip is fed into position adjacent the driver for driving such strip into work.
The invention will now be further described by reference to the specific form thereof as shown in the accompanying drawings.
In this connection, however, the reader is cautioned to note that such specific form of this invention as shown in such drawings is for illustrative purposes and for purposes of example only. Various changes and modifications may obviously be made within the spirit and scope of this invention.
The invention will now be further described by reference to the specific forms thereof as shown in the accompanying drawings.
The nailing machine of this invention is formed with a housing 11. Within housing 11 is a piston 12 which in connected to a driver 13. A nut 14 is secured to a screw 14a which in turn is carried by piston 12. Screw 14a and nut 14 connect piston 12 to driver 13 and a retainer 15 is also provided. Retainer 15 is provided with a centrally disposed opening 16 and an adjacent cut-out portion 17. Retainer 15 is also formed with an upstanding wall 18. A coil spring 19, preferably of stranded cross-section is disposed about driver 13 and is retained in position upon retainer 15.
A control valve 20 is also provided. Control valve 20 is formed with an actuating portion 23 which has an upper face 21 and a lower face 22. Upper face 21 has a greater operational area than lower face 22. A spring 24 is provided to hold portion 23 in its normal down position.
Actuating portion 23 is sealed in position within a channel 25 within housing 11 by means of O-ring 26.
Valve 20 also bears a stem portion 27 which is movable within channel 28 and is sealed in position by O-ring 29.
A conduit 30 is provided within housing 11 which is connected to a pressure air supply conduit 31 which in turn is connected to a source of pressure air through coni nector 32. A conduit 33 is provided which in turn is connected to a conduit 34 which in turn is connected to conduit 31 but only through trigger valve 35. Valve 35 includes a stem 36 which has a portion movable within channel 37 and a projecting portion 38 which is connected to trigger 39 projecting seals (preferably O-rings) 3811 are disposed upon portion 38 and prevent pressure air from flowing out to atmosphere when trigger 39 is not depressed. A spring 40 normally holds stem 36 in down" position.
Trigger 39 is pivotally connected to housing 11 by pin 41.
A safety mechanism 42 is optionally provided in engagement with trigger 39 to prevent firing of the tool when not in contact with work.
Conduit 33 is also connected to cylinder 43 within which a piston 44 is disposed. Piston 44 carries portion 45 which is provided with a V-shaped opening therewithin 46 and with a sealing O-ring 47. A pawl member 48 is provided which bears a rearwardly extending rod 49. Pawl member 48 is also provided with a pair of laterally extending spaced arm members 50 and 51 and is provided with a recess 52 therebetween. Arm 51 bears a prong 53 which is adapted to abut the leading fastener 54 of a strip of fasteners 55 and position it into actuating relationship with driver 13. A prong 56 is also provided on arm 51 and is adapted to abut the fastener next rearmost to said leading fastener which is designated as 57.
A second cylinder 58 is also provided and a spring 59 is disposed within cylinder 58 and within recess 52. In order to prevent retrograde movement of the strip of fasteners during retraction of pawl 48 a support member 60 is provided. Support member 60 bears an outwardly extending holding portion 61 and an oifset stop portion 62. It is noted that the structure shown in FIG. 17 shows a pair of spaced elements 61-62 while the alternative structure shown in FIG. 6 shows only a single set of elements 61-62. The corresponding elements in the alternative structure shown in FIG. 6 are designated 61a and 62a. A screw opening 63 is provided to secure support portion 60 (60a) to the corresponding portion of the housing.
Secured to housing 11 by means of screws 64 and nuts 65 the above described feed mechanism 66 is secured to housing 11, by screws 64 and nuts 65. Housing 11, also carries a holding container 67. Holding container 67 is formed with a body 69. Body 69 bears a lateral extension 72 which in turn is secured to housing 11 by pin 73. Body 69 is also provided with a lateral opening 74. A detent recess 75 is also provided on the outside of body 69.
A stern member 70 is provided which is secured in position by a pin 76. Stem member 70 has an upper and a lower portion. The lower portion of stem 70 extends downwardly into hollow stem 83. A washer member 77 is carried by stem 70 and separates the portion above stem 83 from the portion within stem 83. Stem 83 is secured to the downwardly extending portion 78 of stem 70 by screw 81 which is disposed within an opening provided with portion 78. Stem 83 is also provided with a plurality of cut-out portions 82 therewithin. The purpose of these cut-out portions will be subsequently explained. Cover member 71 also carries an upwardly projecting stern portion 83a. Stem 83a is also hollow and stem 83 is disposable within the hollow portion of stem 83a. Cover 71 is also formed with a wall 85 which is provided with an opening 86 which is designed to register with opening 74.
Upon the outer face of cover 71 is a holding portion 87 which is secured to cover 71 by pins 88.
Disposed within holding portion 87 is a rod 89 which has a handle portion 90 secured thereto. Handle 90 is selectively disposable within detent recess 75.
At the opposite end of rod 89 is an offset portion 91. This portion is selectively disposable and engageable within cut-out portion 82.
Support mechanism 66 secured to the body element of the nailing machine of this invention carries an openablc door 92. Door 92 is pivotally supported on hinge pin 93 which passes through aligned longitudinal recesses 94, 94a, 94b and 940 located within door 92 and within the aligned structures. A cut-out portion 95 is also provided which is adapted to accommodate spring 96 which normally biases door 92 in open position when not retained by clip 99.
Door 92 is also provided with a holding portion 97 which is designed to support clip 99 and thus retain door 92 in closed position. Clip 99 normally overlies portion 97 of door 92. When door 92 is to be opened clip 99 is turned to the position shown in FIG. 21 to clear clip 99 from contact with portion 97.
An additional holding portion 98 is provided and a U-shaped clip 99 holds portions 98 and 97 to one another and thereby retains door 92 in closed position. A driving recess 100 is also provided adjacent driver 13.
The machine of this invention is designed to operate with the strip of fasteners 55 in the form shown in FIG. 21. It is noted that a plurality of securing strips 101 are spaced from one another and are secured to the fasteners composing strip 55. The specific strip of fasteners as shown, was separately claimed in another application, Ser. No. 729,113, filed May 14, 1968 which is a continuation-in-part of an earlier application Ser. No. 616,746, filed Jan 23, 1967 and is not essential for the operation of this invention.
With the foregoing specific description the operation of this invention may now be explained.
A strip of fasteners 55 is inserted into holding container 67 of magazine 66 by the removal of cover 71 therefrom. Cover 71 is removed by turning handle 90 and removing it from recess 75 and thence removing portion 91 from a recess 82. Cover 71 is then slid downwardly in the direction of the arrows shown in FIG. 1. The strip of fasteners is disposed about the mating supports disposed within the center of the holding container of the magazine as shown clearly in FIG. 21. Clip 99 is turned so that door 92 in the support portion of the magazine is biased in the open position. Door 92 is held in open position until the magazine cover is replaced.
Cover 71 is then secured in position about the container portion of the magazine by disposing offset portion 91 within one of the openings 82 and securing handle 90 in position within recess 75. The particular opening 82 selected would depend upon the length of nail that is desired to be utilized in connection with the device. The leading fastener of the strip of fasteners is now ,put in position adjacent prong 53 of pawl 48 and the next rearmost fastener placed adjacent prong 56 of pawl 48. Door 92 is then closed and secured in position by turning clip 99 so that it now overlies portion 97.
Connector 32 is then connected to a source of pressure air and the machine placed adjacent to work. In the normal rest position of the machine pressure air fills conduit 30 and bears against lower face 22 of control valve 20. However pressure air also fills conduit 33 which cause pressure air to also bear upon upper face 21 of control valve 20. Since the operational area of lower face 22 is less than the operational area of upper face 21 the pressure air involved keeps actuating portion 23 of the valve in the down position preventing pressure air from moving drive piston 12. At the same time pressure air also is applied to piston 44. This forces piston 44 forwardly thereby pushing pawl 48 forwardly and thereby pushing the leading fastener 54 into recess 100 adjacent to driver 13. When trigger 39 is now pulled it connects conduit 34 to atmosphere since stem 38 is now above openings 38b and thereby removes pressure air from conduit 33 and prevents impingement of pressure air on upper face 21 of control valve 20. The pressure air within conduit 30 now bears against lower face 22 of control valve 20 and causes actuating portion 23 of this valve to rise. This permits pressure air to reach drive piston 12 and drives this piston downwardly. This causes driver 13 to move downwardly and also compresses spring 19. The leading fastener 54 of strip 55 has now been driven into work.
At the same time, since pressure air has been exhausted from conduit 33, the spring 59 brings pawl member 48 rearwardly. Since pawl member 48 is pivotally connected prongs 56 and 53 pass over the fasteners of strip 55. In order to prevent retrograde movement of the strip of fasteners while this movement is taking place support portion 60 or support portion 60a is provided. While pawl 48 is moving rearwardly the fasteners are held against stop portions 62 or 62a.
When the trigger is released pressure air again fills conduit 33 thereby causing actuating portion 23 of control valve 20 to return to its normal rest position. At the same time pressure air then is applied to piston 44 forcing this piston forwardly and causing prongs 53 and 56 to move the respective fasteners against which they 'bear forwardly. It is pointed out that the fastener next rearmost to the fastener urged forwardly by prongs 53 and 56 respectively can move over holding portion 60 or 60a in a forward direction until they reach stop portions 62 or 62a. At this point stop portions 62 or 62a bear against the respective fastener and prevent the retrograde movement as previously discussed.
When the fasteners are exhaused and the device must be re-loaded cover 71 is removed from the magazine by turning handle so as to remove it from recess 75 and pulling outwardly. Offset portion 91 is then removed from one of the openings 82. Clip 99 is then turned axially to remove it from portion 97. Door 92 then springs open. A new supply of fasteners is then disposed about the mating supports which are disposed within the holding container of the magazine. The loading then continues as previously. discussed.
The foregoing sets forth the manner in which the objects of this invention are achieved.
1. Magazine and feed mechanism for a fastening device comprising, in combination, a cylindrical magazine having a housing portion, a first upstanding stem portion within said housing portion, a removable cover underlying said magazine and having fastener discharge means in alignment with said magazine, said removable cover having a second upstanding stem portion engageable with said first stem portion; means securing said cover to said magazine, a fastener feed mechanism adjacent to said magazine and in alignment with said fastener discharge means, said feed mechanism comprising a wall, fastener moving means carried by said wall, a door pivotally connected to said feed mechanism and adapted to lie alongside said wall in closed position, and means for securing said door in closed position.
2. Magazine and feed mechanism as described in claim 1 said fastener advancing means being movable forwardly by fluid actuation and rearwardly by spring actuation.
3. Magazine and feed mechanisms as described in claim 2 said fastener advancing means also including a pawl having a first extending prong adapted to abut the leading fastener issuing from said magazine.
4. Magazine and feed mechanism as described in claim 3 said pawl also having a second extending prong spaced from said first prong and adapted to abut the next rearmost fastener.
5. A mechanism as described in claim 4 said pawl provided with a recess, said spring being a coil spring lying within said recess, and rearwardly projecting rod carried by said pawl and actuated by said fluid means.
6. A mechanism as described in claim 5 said fastener moving means including a cylinder, a piston within said cylinder, a V-shaped groove carried by said piston and abutting said rod so that said rod is pivotally connected to said piston.
7. A mechanism as described in claim 6 including a support member for preventing retrograde movement of fasteners moved forwardly sequentially, said support member having an outwardly extending inclined portion and an offset stop portion adapted to abut the fastener adjacent to the leading fastener being moved forwardly.
8. A pneumatically operated fastener driving machine comprising a housing, a piston movable within said housing, a driver connected to said piston and adapted to drive the leading fastener of a strip of interconnected fasteners into work, spring means carried by said piston adapted to retract the same into normal rest position, an upwardly movable valve member operatively connected with said piston and normally preventing impingement of pressure air thereupon, said valve member having a first face and a second face, said first face having greater surface area than said second face; first conduit means for optionally applying pressure air to said first face, second conduit means for applying pressure air to said second face, trigger valve means operatively connected .to said first conduit means adapted to optionally connect said first conduit means to the atmosphere, a first cylinder connected to said first conduit means, a fastener advancing piston forwardly movable within said first cylinder 7 when pressure air is applied thereto, a support element carried by said piston and provided with a V-shaped opening therewithin, a pawl member having a rearwardly extending rod member pivotally connected to said support member and disposed within said V-shaped opening, said pawl member also provided with a pair of lateral arm members and a recess therewithin, a pair of spaced prongs carried by one of said arm members, one of said prongs being adapted to abut the leading fastener of a strip of fasteners and to position it adjacent said driver, the other of said prongs adapted to abut the next rearmost fastener and position it in proper sequence, a second cylinder spaced from said first cylinder and disposed forwardly of said pawl, a coil spring member disposed within said second cylinder and within the recess within said pawl, a support member adjacent said pawl adapted to prevent fastener retrograde movement, said support member having an outwardly extending holding portion and an offset stop portion adapted to abut the next rearmost fastener, a magazine for support of a strip of fasteners connected to said fastener driving machine, said magazine having a holding container including a hollow cylindrical body portion provided with a first laterally disposed opening therewithin, an upstanding support within said body, cover means upon said body having a second laterally disposed opening therewithin in alignment with said first-named opening, an upstanding support within said cover in meshing relationship with said first-named support, means for securing said cover to said body, a support mechanism carried by said magazine including a body having an interior portion adapted to support said fasteners and said pawl, a door pivotally connected to said body and normally biased in open position, means upon said door and said body to hold said parts selectively in closed position, and means for connecting said device to a source of pressure air.
References Cited UNITED STATES PATENTS 3,099,837 8/1963 Heilman et 211.
3,259,292 7/ 1966 Maynard 227-136 XR 3,281,046 10/1966 Boulay 227--115 3,330,462 7/1967 Colechia et a1 227-136 GRANVILLE Y. CUSTER, JR., Primary Examiner
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|International Classification||B25C1/00, B25C1/04|
|Cooperative Classification||B25C1/003, B25C1/041|
|European Classification||B25C1/00B2, B25C1/04B|
|May 24, 1985||AS06||Security interest|
Owner name: BANKERS TRUST COMPANY A NEW YORK BANKING CORP
Effective date: 19830819
Owner name: VENICULUM INCORPORATED
|May 24, 1985||AS||Assignment|
Owner name: BANKERS TRUST COMPANY A NEW YORK BANKING CORP
Free format text: SECURITY INTEREST;ASSIGNOR:VENICULUM INCORPORATED;REEL/FRAME:004404/0886
Effective date: 19830819
|Nov 17, 1983||AS||Assignment|
Owner name: VENICULUM INCORPORATED, 1100 HICKS ROAD, ROLLING M
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SWINGLINE INC.;REEL/FRAME:004196/0645
Effective date: 19830819
|Aug 29, 1983||AS||Assignment|
Owner name: BANKERS TRUST COMPANY, A NY BANKING CORPORATION
Free format text: SECURITY INTEREST;ASSIGNOR:VENICULUM INCORPORATED;REEL/FRAME:004172/0159
Effective date: 19830819
|Aug 29, 1983||AS06||Security interest|
Owner name: BANKERS TRUST COMPANY, A NY BANKING CORPORATION
Effective date: 19830819
Owner name: VENICULUM INCORPORATED