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Publication numberUS2212339 A
Publication typeGrant
Publication dateAug 20, 1940
Filing dateOct 27, 1936
Priority dateOct 27, 1936
Publication numberUS 2212339 A, US 2212339A, US-A-2212339, US2212339 A, US2212339A
InventorsCullen Arthur V
Original AssigneeCullen Arthur V
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for applying fastening means
US 2212339 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

A. V. CULLEN DEVICE FOR APPLYING FASTENING MEANS Aug. 20, 1940.

Filed 001:. 27, 1956 illlllllllll Patented Aug. 20, 1940 UNITED STATES DEVICE FOR APPLYING FASTENING M ANS Arthur V. Cullen, Jamaica Plain, Mass. 1 Application October 27, 1936, Serial No. 107,763

7 Claims.

This invention relates to an improveddevice for driving tacks or the like, and particularly to a device of the type disclosed in my copending applicationserial No. 738,421, filed August 4, 1934 which issued as United States Patent No. 2,065,659 on December 29, 1936. As, disclosed in that application, devices of this character may be advantageously employed with fastening means in the form of tacks with attached Wires which are employed to secure the jaws of a corpse in closed position.

The present invention provides an automatic tack driving device which is shaped so that its end may conveniently be inserted into the mouth of the corpse and positioned to drive a tack or fastening element into the bone cf the jaw. The tack driving tool comprises a spring and a cooperating plunger having a heavy hammer portion, associated with means to compress the spring so that the latter. may be released to impel the plunger against the tack and thus drive it with considerable force into an object, such as the jaw bone of a corpse or the like.

The tool may be provided with a slidable assembly which may be conveniently actuated by the fingers of the user and which includes spring elements engageable with the hammer portion of the plunger to move the latter to its retracted position and compress the main spring. The spring elements normally extend through slots in the casing of the device, the ends of these slots acting as cam means to disengage the elements from the plunger to release the latter and the main spring. I

The plunger also includes a small-diametered extension which projects into a bore in an auxiliary housing which preferably has a portion movable relative to the casing, normally being held in a projected position by a light coil spring. This arrangement permits a tack to be disposed in the end of the bore of the auxiliary housing,

which cooperates with the plunger in affording a socket when the plunger is in its projected position- Thus there is little possibility of injury to the hand of the user of the device if the tack is positionedwhen the plunger is in its projected position. When the plunger is to be released, the end of the device may be pressed against the object in which the tack is being drivenso that the light spring associated with the auxiliary housing is slightly compressed, permitting the end of the plunger at the end of the driving stroke to be juxtaposed to the end of the retracted auxiliary housing portion so that the tack is firmly driven into the bone of the jaw. Thecasing of the device preferably is provided witha screwthreaded cap which may be adjusted to vary the compression of the main spring and thus to vary the force of the blow imparted by the plunger to the tack.

Preferably the auxiliary housing is detachably connected to the main casing by a bayonet slot and stud connection, the'stud being arranged so that it may provide a convenient point of a temporary attachment for the wire which is associated withthe tack. The tip-of the auxiliary housing which receives the tack is provided with aslotted side portion through which the'wire may project.

In the accompanying drawing:

Fig. 1 is a vertical section of the tack driving device, with parts broken'away and shown in elevation;

Fig. 2: is a similar view but showing the plunger in its retracted position and at the instant it is being released to perform the driving stroke; A

Fig. 3 is a section indicated by line 33 of Fig. 1; 1

Fig. 4 is an elevational detail of the fastening device which may be applied by a tool constructed in accordance with the present invention; and

Fig. 5 is a central. section of the portion of the jaw structure of a human corpse showing my improved fastening means applied thereto, a portion of the face and mouth'being diagrammatically outlined in dot and dash lines. 30

In the accompanying drawing, the numeral I designates a generally tubular or cylindrical casing of the tack driving device, which is provided with a screw-threaded end portion receiving the internally threaded cap 3, the latter being provided with a corrugated head 5 to facilitate its manual rotation. When desired, the cap may be unscrewed from the casing I to afford access to the interior thereof. The lower end of the casing is provided with an annular plug or wall 8.

A heavy main spring II is disposed within the upper part of casing I, and its upperend engages the inner face of cap 3,while its lower end engages the plunger I2, that includes the relatively heavy cylindrical hammer portionIS which slides 45 in casing I. The'lower part of the plungeris shaped to afford an annular shoulder I8 engageable with the lower portion 8 of thecasing I, while a small diametered rod portion I6 of'the plunger projects through a bore in this portion of 60 the casing.

An auxiliary housing 20 issecured to the lower part of the casing I, andthe rod portion I6 of the plunger extends into the end of this auxiliary casing. The auxiliary casing preferably may be 55 formed in two parts, including a larger portion 20a, which has a bayonet slot I9 engaging a stud 2| projecting from the lower part of easing I. The lower part of the casing section 200. receives the flared end of a tip portion 20b which is held in the normal position illustrated in Fig. 1 by a light auxiliary spring 24 disposed about the plunger. Thus the section 2011 may slide inwardly relative to the section 20a. The end of the tip section 2% of the auxiliary housing fits closely about the end of the projected plunger rod l6. Thus when the plunger is in its normal position and the tip portion 20b of the auxiliary housing is in the position shown in Fig. 1, these parts cooperate in providing a small cylindrical recess or socket in which a tack may be received. If desired, these parts may be magnetized to aid this effect. The wall of the end portion of member 20b is cut away to provide a slot 29, and the upper end of this slot may be provided with an enlargement 29a.

Thecasing I is provided with opposite longitudinal slots 30 (Fig. 2) above the plug 8 and a sliding assembly 31 is mounted upon this portion of the casing. This assembly may comprise opposite portions 33 (Fig. 3) shaped to fit about portions of the cylindrical surface of the casing I and opposite, diametrically disposed chambers 34 connecting these portions. Thesechambers 34 may have integral extensions in the form of finger rings 35 which may be engaged by the fingers of the user of such a device. Pins 36 extend between the walls of each of the chainbers 34, and leaf spring elements 40 are mounted upon each of these pins, these elements each having one leg bearing against the outer wall of the corresponding chamber 34, as shown in Figs. 1 and 2, and having a second leg with an-inturned end portion 'enga'geable under a shoulder of the plunger l2 when the latter is in its projected position, as shown in Fig. 1.

A device of this character may be employed to drive a tack, the head of the tack being inserted in the socket provided by the end of the auxiliary housing 20. The hand of the user of the device maythen be engaged with the casing l and with the finger pieces 35 so that the sliding assembly 3| may be moved away from the housing 20, the elements 4!! remaining in engagement'with the shoulder I8 of the plunger so that the latter is moved to retracted position and the spring H is compressed.

At the upper end of this stroke of the plunger,

7 the legs of the elements 40 have a cam-like engagement with the ends of the'slots 3|), this position of the parts being shown in Fig. 2. At this instant, the elements 46 are thus moved out of engagement with the plunger, which is released and driven downwardly against the tack under the force of the spring II. If the tack engages an object such as the bony structure of the jaw, the tack is impelled outwardly, the auxiliary housing portion 291) being pressed inwardly or retracted while the light spring 24 is compressed, so that the tack is almost entirely exposed as the plunger reaches the outer end of its path with its end portion in substantial co-planar relationship with the end of. the housing. After the plunger has returned to its normal position, the sliding assembly 3! may be moved toward the housing 20, the inner ends of the spring elements 40 engaging the plunger during this movement until the assembly reaches the point at which the ends of these elements may'snap under the shoulder l8 of the plunger to the position illustrated in Fig. 1.

Obviously this construction permits the tack to be disposed in the cylindrical socket afforded compression of the latter may be varied, thus permitting adjustment to alter the force of the blow with which the plunger may drive the. tack.

A device of this character is particularly advantageous when employed in conjunction with fastening elements of the type illustrated in Fig. 4. Such an element may comprise a tack with a conventional disk-like head portion 50 and an adjoining annular flange 5| spaced from the head 50 and cooperating with the same and the shank of the tack to afiford an annular groove. Below the flange 5| the shank may extend to a pointed end 54 and may be providedwith one or more barbs 55 in the form of conical or frusto-conical sections terminating in substantially flat annular shoulders. Thus when a tack of this character is driven into an object, the barbed portions, and particularly the shoulders 55, may catch upon the material surrounding the opening made by the tack so that the latter is very firmly anchored in place.

The annular groove adjoining the head of'the tack is adapted to receive a strand of material which may be in the form of a ductile wire. Thus, as shown in Fig. 4, a wire 58 may. have a looped portion 59 received by. the annular groove at the head of the tack, a length of the strand extending from the looped portion for engagement with any suitable object, such as a similar strand 'extendingirom a similar tack. 'It is evident that when a tack of this character is inserted in the socket portion of a tool such as illustrated herein, the strand portion extending from the head of thetack may be received in the slot'29 in the wall of the socket. Furthermore, the strand or wire 58 may conveniently be looped about the stud -2I, thus serving to hold the tack in the socket provided by the end of the auxiliary housing 28!. I I

Means of the character described may be employed to secure the jaws of a corpse in closed position. The tack driving tool is. particularly advantageous for this purpose, since its end portion has a small diameter and may be inserted beneath the lip of the corpse properly to position the tack for insertion in the bony structure of the jaw. Thus when a tool of this type is to be used for this purpose, a tack of the character illustrated in Fig. 4 may be disposed in the position illustrated in Fig 2, the end of the tool being inserted under the lip of the corpse so that the end of the tack pricks the fiesh of the jaw. The slidable assembly 3| may then be slid toward the cap '3 so that the spring II is compressed and the plunger is moved to its retracted position, this movement being continued until the elements 40 are moved out of engagement with the hammer portion of the plunger which is thereupon releasedand impelled by spring I! so that it strikes the tack with a sharp blow. As this occurs the auxiliary housing 20 is pressed back due to its engagement with the flesh over the bony structure so that the entire length of the tack below flange 5| may be driven into-the to I the walls of the casing and: engageable with the head: ofsthe. plunger "wherebya'the slidable assembly may 'be moved relative. to the. casing to flesh and. bone of the jaw. The wire may then bedisconnected from'the stud 2|;

Obviously this operation may be followed in driving a tack into the bone of the upper jaw in the'general position illustrated in Fig. 5, above or between the roots of the upper teeth 66. In a similar manner a tack may be driven into the bony structure 68 of the lower jaw between or below the lower teeth 69. Each of these tacks is provided with a strand 58, the strand portions being brought into engagement and tied or twisted in position to hold the jaws properly closed with the teeth in'engagement, as illustrated in Fig. 5, the lips of the corpse then being readily positioned over the strands so that a natural appearance is impartedto the mouth and lips. When the plunger I2 is first released the slidable assembly 31 remains in the position shown in Fig. 2. In this position of the parts the inner ends of the spring elements 40 engage the cylindrical surface of the head'l5 of the plunger and the slidable assembly can then be slid downwardly on the casing l with the ends of the spring elements 40 sliding along this cylindrical surface until they snap into engagement with the shoulder beneath the head of the plunger, i. e., into the position illustrated in Fig. 1. It is evident that the device may be conveniently manipulated with the upper part of the casing I held in place by one hand of the user which is grasping the cap member 3 at the upper part of the casing, while the other hand of the user can readily cause the sliding movement of the assembly 3| by engagement of the fingers in the finger rings 35.

It is evident that the present invention affords a simple, effective and convenient tool for driving tacks or fastening elements of the type of tacks. It is furthermore evident that the device is particularly useful in applying fastening elements comprising tacks and attached strands or wires of the general type disclosed in my aboveidentified copending application.

I claim:

1. A tool of the class described, comprising a casing, a plunger having a head slidable in the casing, a coil spring adapted to actuate the plunger, a slidable assembly upon the casing including means to retract the plunger and compress the spring, parts of said assembly cooperating with a part of the casing to release the plunger and spring, an auxiliary housing into which a portion of the plunger extends, said housing providing a recess to receive a tack which may be driven from the auxiliary housing when the plunger is released, said auxiliary housing being slidable relative to the casing, and a spring normally holding the housing in projected position, whereby the housing and the plunger portion of. small diameter cooperate to afford a socket to receive a tack when the plunger is in its unretracted position, the spring associated with the housing being capable of compression when the device is employed in driving a tack into an object so that the end of the released plunger may move substantially into juxtaposition to the end of said housing.

2. A tool of the class described comprising a casing, a plunger having a. head slidable in the casing, a coil spring disposed in the casing and arranged when compressed to actuate the plunger, a slidable assembly upon the casing including opposite chambers and spring elements mounted in the chambers, said elements having parts projecting from the chambers into slots in effect the retractive movementof the plunger and compression of the spring, the ends of the slots in the walls ofthe casing being arranged to engage said spring. elementswith a cam-like effect to move them out of. engagement with the plunger so that the latter'may be released to permit theend of the plunger to strike a blow upon a tack orthe like.

3. A tool 'of the class described comprising a casing, a plunger having a head slidable in the casing, aicoil spring disposed in the casing and arranged when compressed to. actuate the plunger, a slidable assembly upon the casing including opposite-chambers and spring elements mounted in the chambers, said elements having parts projecting from the chambers into slots in the walls of, the casing and engageable with the head of the pliuiger' whereby the slidable as sembly may be moved relative to the casing to effect the retractive movement of the plunger and compression of the spring, the ends of the slots in the walls of the casing being arranged to engage said spring elements with cam-like effect to move them out of engagement with the plunger, an auxiliary housing receiving a small diametered portion of the plunger and cooperating therewith to provide a socket, the wall of said housing being provided with a slot so that the socket may receive a tack with a strand extending from its effect the retractive movement of the plunger and compression of the spring, the ends of. the slots in the walls of the casing being arranged to engage said spring elements with a cam-like effect to move them out of engagement with the plunger, an auxiliary housing receiving a small diametered portion of the plunger and cooperating therewith to provide a socket, the wall of said housing being provided with a slot so that the socket may receive a tack with a strand extending from its head portion through the slot in said housing wall, and a stud extending from the casing for temporary connection to the end of a strand extending through said slot.

5. A tool ofthe class described comprising a casing, a plunger having a head slidable in the casing, a coil spring adapted to actuate the plunger, a slidable assembly upon the casing including means to retract the plunger and compress the spring, parts of said assembly cooperating with a part of the casing to release the plunger and spring, an auxiliary housing receiving a small diametered portion of the plunger and providing a recess to receive a tack which may be driven from the auxiliary housing when the plunger is released, said auxiliary housing being slidable upon a fixed extension of the casing, and a spring normally holding the housing in projected relation to said extension, whereby the housing and the plunger portion of. small diameter cooperate to afford a socket to receive a tack when the plunger is in its .unretracted position, the spring associated with the housing being capable of compression when the device is employed in driving a tack into an object so that the end of the released plunger may move substantially into juxtaposition to the end of said housing, a stud projecting from the wall of the casing and engaging a bayonet slot in the wall of the auxiliary housing, whereby the auxiliary housing may be readily detached from the casing to afford access to said auxiliary spring.

6. A tool of. the classdescribed comprising an elongate casing, a plunger having a head slidable in the casing, a coil spring in said casing for actuating the plunger, a slidable assembly upon the casing including opposite chambers with symmetrically disposed finger rings secured thereto, spring elements mounted in the respective chambers, said elements having parts projecting from the chambers into slots in the wall of the casing and engageable with the head of the plunger, whereby the slidable assembly may sion of the spring, the ends of the slots in the walls of the casing being arranged to engage said spring elements with a cam-like effect to move them out of engagement with the plunger so that the latter may be released, an extension of said casing receiving an extension of the plunger and providing a socket for a tack to be struck by said extension of the plunger when the latter is released.

7. A tool for applying a fastening device tothe bony structure of the jaws of a corpse, which device consists of, a tack-like element with awire strand extending from the head portion thereof, said tool comprising a casing, a plunger slidable in said casing between a retracted and an advanced position, said plunger in its retracted position cooperating with the end portion of the casing in providing a socket for receiving said element of the. fastening device, the wall of. said portion of the'casing being provided with a slot through which the wire strand may extend, and a stud-on the wall of the casing spaced from said end portion about which the free end of the wire strand may be temporarily looped.

ARTHUR V. CULLEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2481190 *Sep 21, 1946Sep 6, 1949Binns Arthur ETack driving device
US2643379 *Dec 18, 1950Jun 30, 1953Steve MatovichScrew starter
US2845627 *Jan 23, 1956Aug 5, 1958De Voe Harlan SMortician's tools
US3010193 *Feb 17, 1959Nov 28, 1961Burroughs CorpAssembly tool
US3205553 *Jul 7, 1961Sep 14, 1965Woodrow H PfeiferApparatus for forming and/or closing the mouth of a corpse
US3220081 *Apr 12, 1963Nov 30, 1965Charles W RectorCalvarium clip
US4762260 *Sep 11, 1986Aug 9, 1988Ophthalmic Ventures Limited PartnershipSurgical microstapler
US4969591 *Jun 27, 1989Nov 13, 1990Ophthalmic VenturesSurgical stapling system
US8052691 *Nov 18, 2004Nov 8, 2011Synthes Usa, LlcSpring loaded fixation element insertion device
US8217744 *Feb 20, 2008Jul 10, 2012Hexaformer AbTransformer arrangement
US8523037 *May 1, 2007Sep 3, 2013Illinois Tool Works Inc.Control valve assembly for fastener-driving tool
US20050070918 *Nov 18, 2004Mar 31, 2005Zwirnmann Ralph FritzSpring loaded fixation element insertion device
US20090218383 *May 1, 2007Sep 3, 2009Ricardo SeguraControl Valve Assembly for Fastener-Driving Tool
US20100295645 *Feb 20, 2008Nov 25, 2010Hexaformer AbTransformer Arrangement
WO1989004144A1 *Oct 28, 1988May 18, 1989Ophthalmic Ventures Limited PartnershipSurgical stapling system
Classifications
U.S. Classification227/146, 27/21.1, 433/121
International ClassificationA43D5/00, A43D5/12
Cooperative ClassificationA43D5/12
European ClassificationA43D5/12