US1033313A

US1033313A - Machine for inserting fastenings.

Info

Publication number: US1033313A
Application number: US48803109A
Authority: US
Inventors: George Goddu
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1909-04-05
Filing date: 1909-04-05
Publication date: 1912-07-23
Anticipated expiration: 1929-07-23

Description

- G. GODDU.

MACHINE FOR INSERTING PASTBNINGS.

APPLICATION FILED AUG. 5, 1909.

' 1,033, 313. Patented July 23, 1912.

4 SHEETS-SHEET 1.

l V/T/VESSES F1 .1. W7. .gmdiww g COLUMBIA PMNDORAPH CO WASHINGTON, b C.

. G. GODDU. MACHINE FOR INSERTING FASTENINGS.

APPLICATION FILED AUG. 5, 19Q9.

Patented July 23, 1912.

4 snnziws-snnnw 2.

EOLUlBlA PLANOORAPH 60.. WASHINGTON, D. c.

e. GODDU. MACHINE FOR INSERTING PASTENINGS.

APPLICATION FILED AUG. 5, 1909.

W/ 77VESSES- M a- COLUMBIA PMmuRAPX-I C0., WASHINGTON. D. e.

Patented July 23, 1912. I

4 SHEETS-SHEET 3.

G. GODDU. MACHINE FOR INSERTING FASTENINGS.

APPLICATION FILED AUG. 6, 1909.

Patented July 23, 1912.

4 sums-sum: 4.

UMBIA PLANOGRAPH C0. WASHINGTON. D. Q

UNITED STATES PATENT OFFICE.

GEORGE GODDU, 0F WINCHESTER, MASSACHUSETTS, ASSIGNOR 'IO UNITED SHOE MACHINERY COMPANY, OF PATEBSON, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

MACHINE FOR INSERTING FASTENINGS.

To all whom it may concern:

Be it known that I, GEORGE GoDnU, a citizen of the United States, residing at l/Vinchester, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Machines for Inserting Fastenings, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings inclicating like parts in the several figures.

This invention relates to machines for inserting fastenings and particularly to those machines which are designed to handle previously formed fastenings.

An object of the invention is to provide an efficient machine for inserting fastenings which may be manually operated. Power driven fastening-inserting machines have long been known, but the advantages attendant upon the use of such machines, such, for example, as the uniformity and rapidity of operation and the convenience of manipulation of the work while the fastening is being inserted, have been unattainable to the small manufacturer or to the repair man who had no source of power from which such a machine could be driven.

The present invention aims therefore to provide a machine which is inexpensive to manufacture, which is efiicient in operation and which will supply to the small manufacturer or to the-proprietor of'a repair shop means for mechanically inserting fastenings that may be manually operated, and especially to provide a machine that may be operated by the foot of the operator, where by both hands may be free to manipulate the work.

Although the invention aims to provide a machine which may be manually operated, it will be noted from a consideration of the construction herein disclosed that many of the novel principles of operation which characterize the present invent-ion may be utilized to advantage in power-driven machines.

A further object of the invention is to provide a manually operated machine for inserting fastenings, in which the manually operated means through which the various Specification of Letters Patent.

Application filed April 5, 1908.

Patented July 23, 1912.

Serial No. 488,031.

mechanisms are actuated is simple in operation and does not require either the exertion of much force by the operator or the manual movement of any part through a considerable distance.

Another object of the invention is to provide a machine of the type above specified in which the fastening may be driven into the work with a blow. An advantage of this, in addition to the usual advantages at tendant upon impact driving of fastenings, is the avoidance of the necessity for using either a sharply pointed fastening or means for forming a fastening receiving opening in the work.

An important feature of the invention is the provision of manually operated mechanism for inserting fastenings in which there will be substantially no reaction to the operator from the fastening-inserting operation, but in which the actuating movement of the means through which manual force is transmitted to the inserting mechanism will be substantially uniform and steady throughout and without appreciable jar or shock.

A further important feature of the invention is the provision of simple and efficient means for delivering fastenings singly to the inserting mechanism. It is especially desirable in a machine intended for use upon a great variety of work and under a great variety of conditions that the mechanism for separating from the mass or line and delivering fastenings singly to the inserting mechanism be slmple and strong and not likely to get out of order, especially as machines of this type will not usually be used under such conditions as to develop especial skill in the operator. To this end in the illustrated preferred construction a movable raceway is. provided which is arranged to dip into and pick up fastenings from a mass and then to be inclined so that the fastenings slide down it toward the inserting mechanism, the movements of the raceway being preferably utilized to efiect a separation of the endmost fastening of those picked up from the others and its deposit upon a ledge adjacent to the inserting mechanism. Preferably said raceway is pivoted to oscillate between the-fastening-receiving and fastening-dc]ivering positions. The mass of fastenings into which the movable raceway dips is preferably contained in a stationary fastening container, and since in the preferred embodiment of the invention the raceway throws back into the container those fastenings which it has picked up and not used, it will be seen that a feature of the invention is the provision of means for taking from a stationary fastening container a single fastening.

In the preferred construction, the inserting mechanism comprises a sprii'ig-impelled driver and the aforementioned ledge is preferably so located with respect to said driver that it sustains the separated fastening in contact with the driver until the latter is raised preparatory to the driving operation.

An especially important feature of the in vention is the provision of means associated with the fastening-separating mechanism for insuring the delivery of the separated fastening to the driver passage by pressing it in the direction in which it should be moved. Preferably said means operates against the shank of the fastening when the machine is operating with headed fasten ings.

In the preferred construction, the means for pressing the fastening toward the driver passage is yieldingly moved in the direction of its operative movement, whereby it adapts itself automatically to the respective positions of the fastening upon which it operates and of the driver in contact with which the fastening rests and moves the fastening into the driver passage only after the driver has risen to clear said passage. The move ment of said means into inoperative position is preferably positive, the means for effecting this movement serving to prevent premature operative movement, and a novel feature of the invention is the control of the 1 movement of said means in timed relation to the movements of the movable raceway whereby said means cooperates effectively in the novel fastening separating operation which characterizes this invention.

Still another feature of the invention associated with the fastening-delivering mechanism is the provision of a fastening raceway of the type hereinabove referred to, which is arranged to move between its fastening-receiving and fastening-delivering positions along one side of a mass of fasten ings whereby the fastenings coming upon and into it from one side, as it moves into fastening-receiving position, do not meet and interfere with fastenings from the other side, but instead strike the smooth side wall of the fastening container which aids in turning them into the usual fasteningreceiving groove in the raceway.

As hereinabove suggested, a principal. object of the invention is to provide a machine in which the manual force and manual movement required to actuate the various mechanisms shall be comparatively small, and to this end there is provided, in the preferred construct-ion, novel means for effecting a relative movement of the machine head and the work support into work-clamp ing relation to each other.

In the preferred embodiment, a single treadle serves both to effect the relative movement of the work support and the ma chine head into work clamping relation to each other and the raising and release of the driver for the fastening inserting operation, and a feature of the invention is the provision in a machine of the type described of novel means for bringing yielding clamping pressure to bear upon the work.

The novel work release which permits easy feeding of the work between the successivefastening inserting operations will not be claimed in this case since it has been made the subject matter of a divisional application, Ser. No. 683,232, filed March 12, 1912.

Among other features of the invention is the provision of a novel form of fastening container possessing many ad #antages over former constructions and the provision of a novel raceway cooperating with said con t-ainer.

Other objects and features of the inven tion will be apparent when. the following description and claims are considered in connection with the accompanying drawings, in which Figure 1 is a side elevation of a machine embodying this invention, a portion of one of the springs being broken away to dis-- close more clearly the mechanism for raising the work support; Fig. 2 is a detail side elevation of the nail pot and parts associated therewith, the raceway being shown in dotted lines in its fastening delivering position; Fig. 3 is a view similar to Fig. 2, but showing the raceway in its fastening receiving position, the driver in this figure having been raised almost to its fastening releasing position; Fig. i is a view similar to Fig. 3, but showing the completion of the fastening inserting operation; F 5 is a perspective detail illustrating the fastening separating operation; Fig. 6 is a perspective detail similar to Fig. 5, but showing the raceway returned to its fastening receiving position, the nail having been forced into the driver passage as the driver rises to clear said passage; Fig. 7 is a section in two planes on the line 77, Fig. 4-, showing the posit-ion in the machine head of the separator and means for actuating it; Fig. 8 is a detail view, partly in section, illustrating the means for providing the limited work releasing movement of the horn after its initial clamping movement,

In the lower part of the base or standard 2 is fulcrumed at 4 a treadle lever 6 which constitutes, in the illustrated embodiment of the invention, the manually operated means for actuating the various mechanisms hereinafter to be described. The illustrated treadle lever is arranged to operate as a lever of the second class, and the end adapted to be engaged by the foot of the operator is maintained normally in its uppermost position by a spring 8 connected at one end to the lever 6 and at its other end to the standard 2, this spring being shown broken away in Fig. 1 to disclose more clearly the parts behind it.

Pivoted at 10 in the machine base are two levers 12 and 14 having opposed sockets in which are confined respectively the opposite ends of a spring 16 through which yielding pressure is brought to bear upon the work supporting means hereinafter to be described. The levers 12 and 14 have limited relative movement in both directions the amount of movement in the spring-compressing direction being determined by the distance apart of the outer portion of the spring sockets in said levers, and the amount of relative separating movement of said levers being determined by the engagement of an arm 18 upon the lever 14 with a stop 20 upon the lever 12. The lever 12 is provided with a downwardly extending cam 22 with which engages a cam roll 24 on the treadle lever 6, said cam 22 extending through a central slot in said treadle lever, so that as said treadle is depressed the lever 12 will be rocked upwardly about the pivot 10, thus through the spring 16 tending to rock the lever 14 likewise about the pivot 10.

At its outer end the lever 14 bears against the lower end of a horn shaft 26 which carries at its upper end a horn 28 upon which the work to be operated upon is supported, this work being clamped during the fastening inserting operation between the tip of the horn and a work abutment surrounding the driver passage 30 in the front part of the head 32. The driver 34 is arranged to reciprocate vertically in the driver passage 30 and is clamped at its upper end in the cap 36 which serves to limit the clownward movement of the driver, said cap for this purpose engaging a cushion 38 upon the upper part of the head.

The cap 36 has upwardly extending cars 40, between which one end of the driver operating spring 42 is confined against lateral movement, the other end of said spring being clamped in the machine head. The spring 42 is so tensioned that it tends to maintain the driver in its depressed position. The cap 36 has also a depending pawl-engaging portion 44 with the lower end of which a lifting pawl 46 is adapted to engage, said pawl being pivoted at 48 upon a three-armed lever 50 fulcrumed at 52 upon the head 32. The pawl 46 is press-ed normally toward the front part of the head 32 by a spring 54 coiled about the pivot of the pawl and bearing at one end against a pin upon the pawl and at its other end against a pin upon the lever 50.

One of the rearwardly extending arms of the three-armed lever 50 is connected by a rod 56 to the treadle lever 6. Depression of the treadle lever 6 serves to rock the threearmed lever 50 in a clockwise direction about its fulcrum 52 in Fig. 1, thereby raising the pawl-carrying end of said lever and through the pawl raising the driver 34 against the tension of the spring 42 until the tail 58 of the pawl engages a stop 60 upon the head 32 and moves said pawl out of engagement with the depending portion 44 of the cap 46, the driver being thus released to be moved in its nail-driving direction by the spring 42.

The nails or other fastenings to be operated upon by the machine are contained in a stationary nail pot 62 carried upon the side of the machine head, said pot having a pivoted cover 64 for the opening through which the nails are introduced into it, a spring latch 66 provided with a hole to receive a stud 68 upon the cover serving to lock said cover in its closed position. The bottom of the nail pot 62 slopes toward the rear of the machine and at its back end said pot is provided with a nail discharging opening normally closed by a trap door 70 pivoted upon the pot and maintained in its closed position by a spring latch 7 2 similar in construction and operation to the latch 66.

Carried upon one end of the rock-shaft 74 having a transverse bearing in the head 32 is an oscillating raceway 7 6 having in its upper edge a nail receiving groove 78. The raceway is substantially segment-shaped, although it has upon the forward side of the rock-shaft 74 a concentric extension of smaller radius than the part upon the rear side of said rock-shaft. The groove 78 extends along the whole upper edge of said raceway to the end of such extension. The driver passage 30 has its side adjacent to the raceway broken away to receive a nail from the groove 78 when the raceway is in fastening delivering position; that is, when it has been turned about its axis of oscillation until the groove 7 8 is inclined toward the driver passage.

The raceway is so spaced from the driver passage that when the driver is in its depressed position there will be a nail supporting ledge of a width great enough to support the head of one nail only. This ledge is indicated at 80 in Fig. 6. Below the ledge 80 the part in which the driver passage 30 is formed is cut back toward the passage a distance substantially equal to the width of the ledge 80 to form a guideway in which operates a device for holding the nail in position upon the ledge as the raceway moves back toward fastening receiving position and until the driver rises to permit the nail to enter the driver passage, said device then serving also to move the nail into the driver passage. For convenience this device may be termed a separator, although its function is not exactly analogous to the function of those elements of ordinary nailing machines to which the term separator is usually ap plied. The separator is shown at 82 in Fig. and is carried upon a cylindrical slide 84 guided in a transverse opening in the machine head and is yieldingly moved in the direction of its operative movement by a spring 86 confined in a socket 88 in the head and connected at one end to a pin in said socket and at its other end to a pin 90 upon the said slide.

The rock-shaft 74 has attached to its end remote from the raceway a hub 92 held in position by a set screw 94-, said hub having formed integral with it a cam 96 which enters a lateral recess in the slide 84, the shoulder 98 at one end of this recess being maintained normally in contact with said cam by the action of the spring 86. It will be seen, however, that if the movement of the separator 82 is impeded, as by its engagement with a nail resting against the driver, the cam 96 will move away from the shoulder 98 during the movement of the raceway from fastening delivering to fastening re ceiving position, the lateral recess in the slide 8 1 being long enough to provide for such relative movement of the cam and slide. Also integral with the hub 92 is a crank arm 100 having clamped in its outer end by a set screw 102 a headed crank pin 10 1 upon which turns a link 106 slotted near its other end at 108 to receive a pin 110 upon the second rearwardly extending arm of the threearmed lever 50. A plunger 112 in a socket in the link 106 which opens into the slot 108 bears against the pin 110 and is acted upon by a spring 114 in said socket in such manner that the pin is maintained in the upper end of the slot 108 until the raceway comes into its fastening receiving position when the plunger yields to permit the three-armed lever to complete its driver lifting move ment.

The machine comes to rest after a fastening inserting operation with the parts in the position shown in Fig. 1; that is with the driver in its lowermost position, the raceway in its fastening delivering position, and the horn depressed to permit the removal of the work, this extreme depressed position of the horn being permitted, however, only after the horn shaft has been released by means now to be described for providing a lesser movement of the horn, for work feeding purposes, between successive fastening inserting operations. This means, as illustrated, comprises a locking pawl 116 of peculiar design, this pawl being arranged to cooperate with ratchet teeth 118 upon one side of the horn shaft 26, said shaft being prevented from turning by a pin 120 bearing against a slab-sided portion of said shaft in a guiding extension 122 of the standard 2.

Thepawl 116 is provided with a vertical slot 121- which receives a pivot 126 about which the pawl may turn from its locking to its releasing positions and vice versa, and upon which it reciprocates vertically a distance determined by the length of the slot 124. A plunger 128 bearingupon a spring 130 in a socket in the pawl 116 tends normally to maintain the pawl in its uppermost position with the pivot 126 in engagement with the lower end. of the slot 124:. A handle 132 is provided by which the pawl may be moved into its releasing position, this move ment being limited by a stop 134-. The plunger 128 also tends to move the pawl into locking engagen'ient with the ratchet teeth 118 upon the rock-shaft 26.

An edge gage 136 is preferably provided for determining the distance from the edge of the work at which the fastening shall be inserted, and the illustrated gage is formed upon a gage carrying member 138 having two slots in horizontal alinement with each other, one of the slots being open and receiving a pin 140, the other slot being closed and receiving a set screw 1 12 by which the gage carrying member 138 may be clamped in adjusted position. This construction permits the adjustment of the gage transversely to the line of feed of the work and also permits the gage to be moved out of operative position by pushing it backward until the pin 140 is out of the open slot whereby the member 1338 may be turned about the set screw 14:2. Preferably a second gage 14:1 is also provided for use in driving a row of fastenings across the work at points remote from. the edge, as for example, in driving a row of fastenings across the rear of a half-sole tap. This gage is carried upon a member 1 16 provided with a slot 148 in which is received a set screw 150 by which the member 141-6 may be clamped in adjusted position and about which it may be turned into inoperative position.

For convenience in removing mis-shaped or misplaced nails the driver passage in the region of the nail supporting ledge is formed in two parts, one of which comprises a block 152 (see Figs. 5 and 6) held in place by a set screw 15 1, said block being thus removable to open one side of the driver pas sage.

The operation of the machine is as follows: The horn 28 being in work receiving position, as shown in Fig. 1, the work into which fastenings are to be inserted is placed upon the horn and the treadle lever 6 is then depressed. As the lever 6 is moved down- 5 wardly, the cam roll 24: will engage the cam upon the lever 12 and rock said lever upwardly about its pivot 10, thereby through the spring 16 turning the lever 14 also upwardly about the pivot 10, thus raising the horn shaft 26 and with it the horn 28 to clamp the work against the work abutment surrounding the driver passage 80. As the horn shaft is moved upwardly the ratchet teeth 118 will pass by the pawl 116 until the work is clamped against the work abutment, the pawl being at this time held at the upper limit of its movement by the spring-pressed plunger 128 and when the work is clamped the pawl will be engaged with that one of the teeth 118 which corresponds in position upon the horn shaft to the thickness of the work clamped. The depression of the treadle lever 6 will also serve through the rod 56 to rock the three-armed lever 50 in a clockwise direct-ion about its pivot 52, thus through the pawl 16 raising the driver 34 against the tension of its spring 42 until the tail 58 of the pawl has engaged the stop 60 and tripped the pawl, thereby permitting the driver to be suddenly depressed under the action of the spring 12. As the driver starts to rise the raceway begins to move from its fastening delivering to its fastening receiving position, and the nail which it has deposited upon the ledge 80 adjacent the driver passage will be separated from the others in the raceway and these will be returned to the nail pot.

It will be noted that the initial separating action of this'machine is efiected by the return movement of the raceway which causes the nails in the raceway to be separated from the one which has been deposited upon the ledge. To insure the delivery of this nail to the driver passage and its permanent separation from the other the device 82 has been provided which, as hereinabove pointed out, has been termed a separator in this description, although, as now seen, its sole function is not that of a separator. As the raceway 7 6 returns to its fastening receiving position the cam 96 will permit the slide 84 to be moved in the direction of its operative movement by the spring 86 and the separator 82 will come into engagement with the shank of the nail sustained upon the ledge 80, the point of the separator 82 being in the plane of its rear face so that as it moves forward it will tend to force the nail toward the driver passage. The cam 96 is so shaped that during the first part of its angular movement it permits no operative movement of the separator. The driver still blocks the driver passage at this time, and the slide 8 1 is therefore not permitted to move forward under the action of the spring 86 and the cam 96 therefore moves away from the shoulder 98. The spring 86 is, however, under tension and as soon as the driver has risen above the head of the nail upon the ledge 80 it will move the separator 82 suddenly forward, thus throwing the nail bodily into the driver passage in advance of the descent of the driver to drive it. After the first nail has been driven and the operator has permitted the treadle lever 6 to rise under the action of the spring 8 preparatory to driving a second nail, the horn shaft 26 will move downwardly under the action of gravity, carrying with it the pawl 116 and compressing the plunger operating spring 130. Only a limited amount of downward movement of the horn shaft will be permittedat this time since the pivot 126 will engage the upper end of the slot 124 in the pawl and prevent its further downward movement. This movement will, however, be suflicient to release the work to permit it to be fed over the born by the operator. After the nailing has been completed, the operator will grasp the handle 132 and move the pawl out of engagement with the ratchet teeth 118, thereby permitting the horn shaft and horn to drop to their lowermost posit-ions, so that the work may be readily removed.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described, having, in combination, a raceway movable between a fastening receiving position and a fastening delivering position, a stationary fastening sustaining ledge forming an openended extension of theraceway, said extension being of such a length and so located that it will receive in one end a single fastening only from the raceway when said raceway is in fastening delivering position, and means for insuring that the fastening will be delivered from the other end of said extension.

2. A machine of the class described, having, in combination, a raceway movable between a fastening receiving position and a fastening delivering position, a fastening sustaining ledge forming an open-ended extension of the raceway when said raceway is in fastening delivering position and constructed to receive a single fastening only from the raceway at such time, and means for temporarily closing one end of said extension while said raceway is in fastening delivering position.

3. In a machine of the class described, the combination with a raceway pivoted to oscillate between a fastening receiving position and a fastening delivering position, of a ledge arranged to form an open-ended eX- tension of the raceway and to receive a single fastening from the raceway when said raceway is in fastening delivering position, and means for preventing movement of the fastening along the ledge while the raceway is in fastening delivering position.

4,. A machine of the class described, having, in combination, fastening inserting mechanism comprising a driver and a driver passage in. which said driver operates, a raceway movable between a fastening receiving position and a fastening delivering position and spaced from said driver passage when in fastening delivering position, and a fastening sustaining ledge arranged to bridge the gap between the end of said raceway and the driver passage and constructed to receive a single fastening only from said raceway when said raceway is in fastening delivering position.

A machine of the class described, having in combination, fastening inserting mechanism including a fasteningdriver, a ledge arra god to support a single fastening in contact with id driver when said driver is in its lowerumst position, and a raceway movable between a fastening receiving and a fastening delivering position and constructed and arranged to deposit a single fastening directly upon said ledge when in fastening delivering position.

6. A machine of the class described, having in combination, a stationary nail pot and a raceway constructed and arranged to pick up from said nail pot a plurality of nails and to return to said pot all but one of said nails, and an open ended nail sustaining ledge forming an extension of said raceway and constructed and arranged to receive a single nail from said raceway and to separate said nail from the others as the raceway starts its return movement.

7 A machine of the class described, having in combination, a nail pot, a pivoted nail raceway arranged to oscillate at one side of said pot between a nail-receiving and a nail-delivering position, a part provided with a driver passage adjacent to said nail pot and into which thenails are to be delivered, and a nail separating ledge cooperating with said raceway to cause to be delivered to said passage only one nail ata time.

8. A machine of the class described, having in combination, fastening inserting mechanism, a fastening container, a pivotally mounted fastening raceway arranged to dip into the fastenings in said container and then to be so inclined that the fastenings slide down toward the delivery end of said pivoted raceway, and means for effecting the separation of a single fastening from those in said raceway before it again dips into the fastenings in said container, said means being constructed to guide said fastening to the inserting mechanism.

9. A machine of the class described, having in combination, fastening inserting mechanism, a fastening container, a raceway movable in said container into a position in which it receives a plurality of fastenings and then into a position in which said fastenings are transferred to one end of said raceway, and means adjacent to the said end of the raceway for receiving and sustaining a single fastening of those transferred to said. end, the remainder of said fastenings being again returned to said container, said means being constructed to guide said fastening to the inserting mechanism.

10. In a machine of the class described, the combination with a head provided with a driver passage, a driver and a raceway movable between a fastening receiving position and a fastening delivering position, of a ledge constructed and arranged to receive a single fastening only from said raceway when said raceway is in fastening delivering position, and means for moving said fastening from said ledge into the driver passage before the descent of the driver in the fastening inserting operation.

11. A machine of the class described, having in combination, a head provided with a driver passage, a. driver and a raceway movable between a fastening receiving position and a fastening delivering position, said. parts being so timed that the raceway comes into fastening delivering position while the driver blocks the driver passage, a ledge arranged to receive a single fastening from said raceway and yielding means for moving said fastening into the driver passage as the driver rises to clear it.

12. A machine of the class described, having in combination, a raceway movable between a fastening receiving and a fastening delivering position, a fastening sustaining ledge constructed and arranged to receive a single fastening only from the raceway when it in fastening delivering position, and means for engaging the shank of the fastening deposited upon said ledge as the raceway returns to fastening receiving position.

13. A machine of the class described, having in combination, a head provided with a .driver passage, a fastening-sustaining ledge ad acent to sald drlver passage, a stationary fastening container, a single means for taking a single fastening from said container and depositing it upon said ledge and means for moving said fastening from said ledge 'into the driver passage.

14. A. machine of the class described havmg, 111 combination, a head provided with a driver passage, a fastening sustaining ledge adjacent to said driver passage, said ledge being constructed to sustain a single fastening only, a driver, and means separate from said ledge movable into and out of a position in which it is adapted to deposit a fastening upon said ledge with its head resting against the driver.

15. A machine of the class described, having in combination, a head provided with a driver passage, a driver and a raceway movable between a fastening receiving position and a fastening delivering position, a ledge arranged to receive a single fastening from said raceway when in fastening delivering position, and means for pressing said fastening against said driver as said raceway returns to fastening receiving position.

16. A machine of the class described, having in combination, a head provided with a driver passage, a driver, a raceway movable between a fastening receiving position and a. fastening delivering position to bring a fastening into position to be delivered to the driver passage as the driver rises to clear the said passage, and means for pressing said fastening against said driver as the raceway returns to fastening receiving position.

17. A machine of the class described, having in combination, a head provided with a driver passage, a driver and a raceway movable between a fastening receiving posi tion and a fastening delivering position to bring a fastening into position to be delivered to the driver passage as the driver rises to clear said passage, and a separator arranged to enter behind said fastening as the raceway returns to fastening receiving position constructed and arranged to be held yieldingly against operative fastening delivering movement by reason of its engagement with the fastening until the driver has risen to clear the driver passage.

18. A machine of the class described, having in combination, a head provided with a driver passage, a driver, a raceway movable between a fastening receiving position and a fastening delivering position, a ledge arranged to receive a single fastening from said raceway, and means for pressing said fastening against said driver as said raceway returns to fastening delivering position constructed to effect the delivery of said fastening to said driver passage as said driver rises to clear said passage.

19. A machine of the class described, having in combination, a raceway movable between a fastening receiving position and a fastening delivering position, a ledge constructed and arranged to receive a single fastening only from the raceway when said raceway is in fastening delivering position, and a separator arranged to enter between said fastening and said raceway.

20. A machine of the. class described, having in combination, a raceway movable between a fastening receiving and a fastening delivering position in one plane, a fastening separator movable in a plane transverse to the plane in which the raceway moves and a fastening sustaining ledge arranged to receive a fastening directly from said raceway, said separator being arranged to effect its fastening separating operation between said ledge and the end of said raceway.

21. A machine of the class described, hav ing in combination, a raceway movable be tween a fastening receiving position and a fastening delivering position in one plane, a fastening separator controlled in its movements by the movement of said raceway and movable in a plane transverse to the plane of movement of said raceway and a fastening sustaining ledge arranged to receive a fastening directly from said raceway when said raceway is in its fastening delivering position, said separator being arranged to effect its fastening separating operation between said ledge and the end of said raceway.

22. A machine of the class described, having in combination, a spring-pressed driver,

a raceway movable between a fastening receiving and a fastening delivering position, and means for lifting said driver and moving said raceway, said parts being so constructed and timed that the machine comes to rest with the driver in its depressed position and the raceway in its fastening delivering position, and means for pressing the endmost fastening of those picked up by said raceway against said driver as said raceway returns to fastening receiving position during the operation of the machine.

28. A machine of the class described, having in combination, a head provided with a driver passage, a fastening sustaining ledge adjacent to said driver passage, a raceway movable between a fastening receiving and a fastening delivering position and constructed and arranged to deposit a fastening directly upon said ledge when in fastening delivering position, a separator arranged to move transversely to the plane of movement of said raceway between said raceway and said driver passage, means for yieldingly pressing said separator normally in the direction of its operative movement, and means connected to said raceway for moving said separator positively in the direction of its inoperative movement.

24. A machine of the class described, having in combination, a raceway movable between a fastening receiving and fastening delivering position, a rock shaft by which said raceway is carried, a separator arranged to cooperate with the end of said raceway and to move in a plane transverse to that in which the raceway moves and a cam upon said rock-shaft for controlling the movement of said separator.

25. A machine of the class described, having in combination, a spring-pressed driver, a raceway movable between a fastening receiving and fastening delivering position, a three-armed lever, a driver lifting pawl carried by one arm of said. lever, a treadle connected to another arm of said lever and operating means for said raceway connected to the third arm of said lever.

26. A machine of the class described, having in combination, a work support and a head movable relatively to each other into work clamping relation and maintained yieldingly normally in a work-receiving relation, a spring-impelled driver, a treadle, and connections with said treadle for liftin said driver against the tension of the spring and for effecting a relative movement of said head and said work support into work-clamping relation.

27. A machine of the class described, having in combination, a spring-pressed driver, a driver lifting lever, a Work support movable between a work receiving and a work clamping position, a lever for effecting the operative movement of said work support and a single treadle lever constructed and arranged to operate the driver lifting lever 25 and the work support lifting lever.

28. A machine of the class described, having, in combination, a head, a driver mounted to reciprocate in said head and a driveractuating spring also carried by said head, 30 means for lifting said driver against the tension of its spring comprising a treadle, a lever pivoted upon said head, directly connected with said treadle and carrying a driver-engaging pawl, and means upon said 35 head for tripping said pawl when the driver has been moved relatively to said head a predetermined amount.

In testimony whereof Lhave signed my name to this specification in the presence of 4 two subscribing witnesses.

GEORGE GODDU.

Witnesses H. DORSEY SPENCER, FREDERICK L. EDMANDS.

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