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Publication numberUS2169433 A
Publication typeGrant
Publication dateAug 15, 1939
Filing dateNov 16, 1937
Priority dateNov 16, 1937
Publication numberUS 2169433 A, US 2169433A, US-A-2169433, US2169433 A, US2169433A
InventorsRoy Thomas A
Original AssigneeRoy Thomas A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Nail-driving device
US 2169433 A
Abstract  available in
Images(1)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Aug. 15, 1939. T. A. ROY

NAIL-DRIVING DEVICE Filed Nov. 16, 1937 X77706 77/2307": TfLOTTbCZ/O' 16. 1Q

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Patented Aug. 15, 1939 UNITED STATES PATENT OFFICE NAIL-DRIVING DEVICE Thomas A. Roy, Brooklyn, N. Y.

Application November 16, 1937, Serial No. 174,814

9 Claims.

This invention relates to a nail driving device and particularly to a device for driving and setting nails in the tongue and grooved boards of hard wood floors.

The object of the invention is to provide a light,easily handled device of the character mentioned, wherein nails may be fed automatically into position to be driven manually at an angle into floor boards above the tongue provided thereon without danger of marring or otherwise injuring said boards.

Another object of the invention is to provide a simple effective means for releasing the nails one at a time and discharging them into driving position.

Another object of the invention is to provide a structure wherein a driver head and work-em gaging foot therefor are yieldable rotatably and longitudinally with respect to each other.

Another object of the invention is to provide a novel means for holding the nails in driving position out of engagement with the work until the nail is contacted by the driver.

Still another object of the invention is to provide a simple eifective means for absorbing the rebound of the driver on its return movement after each nail driving operation.

The invention consists in a device for driving nails as set forth in the following specification and particularly as pointed out in the claims.

Referring to the drawing:

Fig. 1 is a side elevation, partly in section, of a nail driving device of this invention positioned to drive nails in the tongue and grooved boards 35v of ahard wood floor; the handle portion of the device being broken away to save space in the drawing.

Fig. 2 is a front elevation of the device looking in the direction of the arrow in Fig. 1, a portion of the driver head being broken away and illustrated in section.

Fig. 3 is a detail transverse section as taken on the line 33 of Fig. 1.

Fig. 4 is a detail transverse section as taken on the line 44 of Fig. 2.

Like numerals refer to like parts throughout the several views of the drawing.

In the drawing, 5 represents a driver head having a flanged portion 6 embodied therein to which an arm I is secured in any suitable manner. The arm I is preferably constructed of wood and has a handle 8 attached thereto at a suitable location thereon. Extending through thehead '5 from top to bottom thereof is a bore 5 9 in a lower portion I0 of which a work-engaging member or foot II is loosely mounted, said foot being yieldingly supported in the head 5 by means of a pair of helical tension springs l2 which are attached at their upper ends to said head and at their lower ends to said foot in a manner to permit a restricted yielding rotary movement of the foot in said head and also permit a longitudinal movement of the head andfoot relatively to each other. The springs l2 will act to efiectively return the foot II to its normal position in the head 5 after each nail driving operation while the device is being moved from one nail driving position to another and is out of contact with the work. The foot II is provided with a flat work-engaging face having a groove I4 provided therein adapted to receive the tongue l5 of a matched floor board I 6 of well-known type in a manner to hold the device correctly positioned with respect to the tongue of the board during a nail driving operation and when the device is positioned as illustrated in Fig. 1. The foot H has a nail passage Il extending downwardly therethrough positioned to discharge nails I8 through the face I 3 of said foot at a point just above the groove it therein, and said nail passage I! has tapering portions I9 and 20 embodied therein at the upper end thereof, while the lower portion of said passage is cylindrical in form and just a trifle larger in diameter than the diameter of the heads of the nails utilized.

Slidably mounted in the head 5 within the up-. per portion of the bore 9 is a reciprocatory plunger 2| constituting a driver for the nails It. The driver 2| is normally held in an elevated position in the head 5, as illustrated in Fig. 1, by means of a spring 22 which is interposed between the top of said head 5 and a head portion 23 of said driver, said head portion 23 being adapted to be contacted by a suitable manually operated hammer during the nail driving operation. The lower portion of the driver 2| is reduced in diameter at 24 to fit the lower portion of the nail passage I! in the foot H. The driver 2| is prevented from rotating in the head 5 and the upward movement of said driver is cushioned by means of a yieldable pin 25 which is slidably mounted in the head 5 in parallel relation to the driver 2!, said pin having a laterally bent portion 26 embodied therein which projects into a longitudinal groove 21 provided in said driver. A helical spring 28 is attached at its upper end to the lower end of the pin 25, while the lower end of said spring is attached at 29 to the head 5. Nor-V mally the spring 28 pulls the pin 25 downwardly and holds the lateral portion 26 thereof in contact with the top surface of the head 5, and the spring 22 pushes the driver2l upwardly with the lower extremity of the groove 21 contacting with the lateral portion 26 of the pin and thereby restricting the upward movement of said driver. The downward pulling action of the spring 28 is considerably greater than the upwardly pushing action of the spring 22, but after the driver 2| has been contacted by a hammer to drive a nail I8, during the return movement of said driver upwardly, the spring 28 will actto cushion the blow caused by the lower extremity of the groove 21 contacting'with the lateral portion 26 of the pin 25. i

' r The nails I8 are delivered to the head 5 to be driven one at a time by the driver 2I bya mechanism as follows: Extending lengthwise of the arm 1 and secured thereto in any suitable man ner is a tubular nail chute 3!] having a longitudinally extending slot 3| provided therein through which the shanks of the nails project, the heads of said nails being contacted by the opposite edge portions of said slot and the nails hanging in an upright position from said chute.

' The nails I8 are supplied to the chute 39 from a suitablehopper which may be ofv any well known type. The lower endportion of the chute'30 is secured'to the head 5 within a member 32 which is fastened to said head, and said chute terminates adjacent to a separator slide 33, mounted in the head, above a delivery passage 34 also provided in said head and communicating with the bore 9 above the upperextremity of the nail passage" provided in the foot I I- The separator slide 33 is shouldered at 35 to supportthe head of a nail I8, and notched at 36 to receive the shank of said nail, andnormally the notch 36 is positioned opposite the slot 3|. in the chute 30 so that the lowermost nail in said chute is delivered into said notch" with the headof the nail resting upon the shoulder 35 of the separator. The separator 33 is moved laterally of the chute 30 in order that a nail held in said separator may be released therefrom and discharged'into the delivery passage 34 from which it will drop point down intothe passage I1 provided in the foot I I by means of a rod 31 pivotally attached at its lower-end at 38 to the head 5 andat its upper end operatively connected to the separator. 1

A rocking movementis transmitted tothe rod 31 from the driver 2| through a'pin 39 which is slidably mounted in the head 5. The inner end of the pin 39 projects into the bore 9 and into the path of the driver 5 and is contacted during the downward movement of said driver by a flat bevelled surface 40 provided upon the side of the driver. At its outer end the pin 39 is provided with a head 4| which is slotted at 42 to receive the rod 31, and the latter is held in said slot and 7 said driver will contact with the inner extremity of. the pin 39 and force thelatter outwardly 5, see Fig. 3, and the nail will be pushed off the separator 33 and willdrop point down into the delivery passage 34 from which it will drop into the passage 9 beside the driver 2! which at this time is descending and completing thedriving of a previously positioned nail into a board. When the driver ZI rises after completing a driving and setting operation, the nail will drop into the passage I1 where it will be intercepted by a spherical stop member 45 which is located within a recess 43 provided in the foot II, said stop member projecting into the passage I1 a suflicient amount to temporarily stop the downward movement of the nail in said foot until the next driving, operation. The spherical member 45 is backed up by another spherical member 41 and the recess '46 by means of an arcuate spring 48, one extremity of which projects into the member 7 41 andthe other extremity of which projects into a recess provided in the opposite side of the shoe I I from that in which the members 45 and 41 are located. During each driving operation as the lower portion 24 of the driver 2| contacts with the head of a nail positioned within the foot I I ,both of said members are yieldingly held within the spherical members 45 and 41 will yield in uni-,

son to permit the passage of said nail through the successive board I6 of a floor is placed in posi-- I tion upon the rough false flooring located therebeneath, a workman carrying a device in one hand. and a hammer in the other hand, places said device-against a board I6 in such a manner that the tongue I5 of said board projects'into the groove I4 of the foot II. At this, time the foot I I is free to yield rotatably within the driver head 5 if the occasion so demands, and a nail IB is held in driving position within the passage I1 of said foot out of contact with the work by means of the yieldable spherical stop member 45. When the device is correctly positioned with" respect to the floor board the head 23 of the driver 2| is contacted by a suitable hammer actuated ,by the workman and said driver is forced downwardly against the action ofthe spring 22.

In descending, the portion 24 of the driver 2| contacts with the head of a nail [8 which up to this time has been held in driving position within the foot II out of contact with the work, and said nail is driven and set with one blow of the hammer upon said driver. During. the downward movement of the driver 21, a nail is released from the nail chute 30 by contact of the bevel 40 with the pin 39, which through the spring 31' actuates the separator 33, and is discharged into the nail passage 34 where it remains until it is permitted to drop into driving position within the foot II when the driver rises. During the upward movement of thexdriver under. the influence of the spring 22, the lower extremity of the groove 21 provided in said driver contacts with the portion 26 of the yieldable pin 25, where-' upon the spring 28 willact to cushion the driver as it reaches the limit of its upward movement. With each nail driving operation, as the driver descends and contacts with a nail, the driver head 5 is permitted by the springs I2 to yield upwardly with respect to the foot ll while the latter is held in contact with the edge and lower face of the tongue of the floor board (see Fig. 1). There is, therefore, a yielding recoil of the driver head 5 upwardly after each blow of the driver 2|. Each blow of the driver in driving a nail will also apply pressure to the board to force the same toward the previously laid board and into close relationship with said board. Successive driving operations are repeated as may be required to fasten the boards IE to the false floor located therebeneath, the foot II with a nail I8 positioned therein being moved along said board with the tongue of the latter located within the groove I 4 provided in said foot and the latter yielding rotatably Within the head as occasioned by the position of the head with respect to the board. In moving the device of this invention from one position to another a nail is always held in driving position within the foot II.

I claim:

1. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail operable therein, a work-engaging member yieldingly mounted in said head beneath said driver, means to feed nails to the head, means to release said nails one by one from said feeding means to drop into said work-engaging member, and a spherical member yieldingly intercepting a nail within the work-engaging member and holding said nail in driving position out of contact with the work until contacted by the driver.

2. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail operable therein, a work-engaging member loosely mounted in said head beneath said driver to yield rotatably and longitudinally with respect thereto, means to feed nails to the head, means actuated by the driver to release said nails one by one from said feeding means to drop into said work-engaging member, means to hold a nail in driving position within the work-engaging member and out of contact with the work until contacted by the driver, and means to cushion the return movement of said driver after a nail driving operation.

3. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail operable therein, a workengaging member mounted in said head beneath said driver, said work engaging member and head being yieldable rotatably and longitudinally with respect to each other, means to feed nails to the head, means to release said nails one by one from said feeding means to drop into said work-engaging member, and means to hold a nail in driving position within the work-engaging member.

4. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail operable therein, a work-engaging member mounted in said head beneath said driver, said work engaging member and head being yieldable rotatably and longitudinally with respect to each other, means to feed nails to the head, means to release said nails one by one from said feeding means to drop into said work-engaging member, means to hold a nail in driving position out of contact with the work until contacted by the driver, and means to cushion the return movement of said driver after a nail driving operation.

5. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail therein, a work-engaging member loosely mounted in said head to yield rotatably and longitudinally therein, means to release nails one by one to drop into said workengaging member, and means to hold a nail in driving position out of contact with the work until contacted by the driver.

6. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail therein, a work-engaging member loosely mounted in said head to yield rotatably and longitudinally therein, means actuated by the driver to release nails one by one to drop into said work-engaging member, means to hold a nail in driving position out of contact with the work until contacted by the driver, and means to cushion the driver upon its return to its normal position.

7. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail therein, a work-engaging member loosely mounted in said head to yield rotatably and longitudinally therein, means actuated by the driver to release nails one by one to drop into said work-engaging member, and a member yi-eldingly mounted within the work-engaging member and yieldingly intercepting a nail and holding the latter in driving position out of contact with the work.

8. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail yieldable longitudinally in opposite directions in said head, a work-engaging member loosely mounted in the head beneath said driver to yield longitudinally Within the head, means to feed nails to said work-engaging member, and means to hold a nail in driving position within the work-engaging member.

9. A nail driving device of the character described comprising, in combination, a driver head, a driver for a nail yieldable longitudinally in opposite directions in said head, a work-engaging memberloosely mounted in the head beneath said driver to yield longitudinally and rotatably within the head, means to release nails one by one to drop into said work-engaging member, and means to hold a nail in driving position within the work-engaging member and out of contact with the work.

THOMAS A. ROY.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2768376 *Aug 17, 1954Oct 30, 1956Thomas CritchleyFull throw mechanism for fastener driving means
US2783468 *Jan 13, 1956Mar 5, 1957Samuel SchwartzAutomatic-feed nailing machine
US2956282 *May 3, 1954Oct 18, 1960United Shoe Machinery CorpHand-held automatic devices for driving headed fasteners
US2976536 *Oct 9, 1957Mar 28, 1961Thomas CritchleyNailing machine
US3360176 *Apr 7, 1966Dec 26, 1967GehlLocating and positioning fixture for nailing machines
US4332203 *Jul 5, 1979Jun 1, 1982Robert FlowersRailway car floor assembly apparatus
US6098865 *Aug 20, 1998Aug 8, 2000Tebo; Glen J.Staple driving device
US6481613Feb 16, 2000Nov 19, 2002Glenn J. TeboFastener driving device
US6488438Feb 16, 2000Dec 3, 2002Glenn J. TeboBoard leveling apparatus and method
US6935546 *Nov 27, 2002Aug 30, 2005Imaginal Systematics, LlcBox spring stapler apparatus
US7222402Nov 14, 2005May 29, 2007Imaginal Systematics, LlcBox spring stapler apparatus
US7255256Mar 3, 2005Aug 14, 2007Stanley Fastening Systems, L.P.Finish nailer with contoured contact trip foot
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US7467454Jun 2, 2005Dec 23, 2008Imaginal Systematics, LlcBox spring stapler apparatus
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US7516533Feb 17, 2005Apr 14, 2009L&P Property Management CompanyPositioning device for staple guns and method of use
US7882994 *Jan 4, 2007Feb 8, 2011Illinois Tool Works Inc.45 degree adjustable adapter for flooring nailer
US8056785Sep 26, 2008Nov 15, 2011Illinois Tool Works Inc.Moveable fastening tool holding bracket
US8235270 *Oct 15, 2007Aug 7, 2012Illinois Tool Works Inc.Fastening tool holding bracket
US8387846 *Jun 3, 2010Mar 5, 2013Illinois Tool Works IncFastening tool with blind guide work contact tip
US8627991Mar 1, 2013Jan 14, 2014Illinois Tool Works Inc.Fastening tool with blind guide work contact tip
US8789735 *Nov 20, 2009Jul 29, 2014Scott David CrawfordFloor stapler shoe
US20050017049 *Jul 25, 2003Jan 27, 2005Betz Brian C.Nail gun tip adapter
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Classifications
U.S. Classification227/110, 227/148, 227/147
International ClassificationB25C3/00
Cooperative ClassificationB25C3/002
European ClassificationB25C3/00B