US1953250A

US1953250A - Fastener-supplying apparatus

Info

Publication number: US1953250A
Application number: US511087A
Authority: US
Inventors: Minett Wilfrid Thomas
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1930-02-06
Filing date: 1931-01-24
Publication date: 1934-04-03
Anticipated expiration: 1951-04-03

Description

A ril 3, 1934.

w. T. MINETT 1,953,250

FASTENER- SUPPLYING APPARATUS Filed Jan. 24%, 1931 3 Sheets-Sheet l April 3, 1934. w. T. MINYETT 1,953,250

FASTENER SUPPLYING APPARATUS Filed Jan. 24, 1931 3 Sheets-Sheet 2 v //v VE/V 7775 \M @M 7am) "may:

Apnl 3, 1934.,- w. T. MINETT FASTENER SUPPLYING APPARATUS Filed Jan. 24, 1931 3 Sheets-Sheet 3 //v v /v 70H. w W Mm Patented Apr. 3, 1934- FASTENER- SUPPLYING APPARATUS Wilfrid Thomas Minett, Leicester, England, as-'-- signer to United Shoe Machinery Corporation, Paterson, N. J.,. a corporation of New Jersey Application January 24;, 1931, Serial No. 511,087 In Great Britain February 6, 1930 28 Glaims.

This invention is concerned with supplying nails or like fasteners to machines, relating especially to machines for attaching heels to shoes, which machines are characterized by power-operated means for delivering loads or gangs of fasteners into position to be driven by inserting mechanism.

An object of the invention is to provide for fastener-delivery in the manner indicated, in which there is prevented the delivery by error of a second load of fasteners to the inserting mechanism before the preceding set has been driven. This object is attained in a machine of the type characterized, in which power-operated means is arranged to deliver fasteners to the inserting mechanism, by novel means for temporarily locking the delivering means against two successive movements. Release of the locking means may be effected upon operation of the fastening-inserting machine.

It is a further object of the present invention to simplify the operation of machines having automatic fastener-loading, by reducing the number of controls which must necessarily be worked for each complete operation of the machine, without impairing the prevention of dual loading, as above indicated, and also without unduly interfering with the operators ability to cause the machine to effect certain movements independently of others. To this end, the power-delivery of fasteners to the inserting mechanism of a machine of the type characterized is obtained under the control of an element of the machine, as by means for applying preliminary pressure to the work.

The above and other phases of the invention will be pointed out in the appended claims, but will become apparent from a consideration of the following description, given by way of example and with reference to the accompanying drawings 49 showing a convenient construction of mechanism according to the invention.

In the drawings,

Fig. 1 is a perspective view of the upper part of a heel-attaching machine arranged for automatic fastener-supply for the inside attaching of heels;

Fig. 2 is a view, partly in vertical section and partly in elevation, of certain parts of the fastener-supply-controlling mechanism of that machine, indicating their position relatively to fastenor-driving and heel-holding devices;

Fig. 3 is a sectional plan view of some parts shown in Fig. 2 and of fastener-transferring mechanism;

'(Fig. 1), down which nails drop point uppermost as they are delivered by the usual retaining plate Fig. 4 shows in plan the under side of additional parts of the transferring mechanism of Fig. 3; Fig. 5 shows inrear elevation fastener-supplycontrolling devices of Fig. 3; and

Fig. 6 shows in plan details of a cam-disk ap- 6Q pearing in Figs. 1 and 2. i I

In the construction illustrated, a machine of the nature described in Letters Patent of the United States No. 1,195,134, Gouldbourn, August 15, 1926, is employed, it being adapted for the attachment of heels from the inside of shoes. In this machine, the measuring of or preliminary pressure upon the work by heel-engaging abutinents mounted in a head 8 is performed by a treadle (not shown in the drawings), and the m mechanism for automatically driving fasteners, herein referred to as nails, and effecting further compression of the work under the powerof the machine by the abutments to resist the driving force, is set into operation by a separate member, specifically a hand-lever shown at 1'7 in Fig. 1.

The machine has fitted on a bracket 12 attached to the upper end of its column 10 a naildistributing or delivering mechanism 11 of the nature described in British Letters Patent No. 23,356 of 1904. This mechanism is constructed to pick oii nails one by one from the end of a singe raceway 14, and finally to deposit a prede-- termined number of nails, as a gang or load, by gravity into a nail-loader or transferrer 20, which in most previously proposed heeling machines is moved'manually to deliver the nail-load to a shoe-supporting jack 18. In the present construction, the loader or transferrer 20 is in some respects similar to that described in Letters Patent of the United States, No. 1,855,405, granted April 26, 1932 to Fred L. MacKenzie. It is automatically moved by power means between a nailreceiving position under a foot-plate or block 15 at the lower ends of a gang of nail-ducts 16 21 of the distributor 11, and a position over the upper face of the jack 18, the movement being provided for by the mechanism now to be described.

The loader 20 is mounted upon a bar 22 sliding rectilinearly in a guideway formed in the lower portion of the bracket 12 to eifect the movement just described. The main driving shaft 24 of the distributor 11 has fixed to it a worm 25 (Fig. 1), which meshes with a gear 26 (Fig. 2) mounted on a sleeve 27. The sleeve is journaled on a verticalshaft 28, the upper end of which is housed within a'casing 31 formed in the bracket 12. The

sleeve 27 carries a bevel-gear 29 meshing with a second bevel-gear 30, journaled on a horizontal axis in the casing 31. The gear 30 meshes with a third bevel-gear 32 journaied on the shaft 28. About this shaft, between the

gears

29 and 32, is mounted a sleeve 33 carrying, at its upper and lower ends, clutch-teeth arranged to engagecomplenientary teeth on those two bevel-gears. The sleeve is splined to rotate with the shaft 28, but may be moved up and down relatively thereto to engage either the gear 29 or the gear 32 by a fork 34 operated as will be described. As the sleeve 33 clutches the gear 29 or the gear 32 to the shaft 28, so the shaft will be rotated in one or the other direction from the gear 26 and worm 25. The shaft 28 projects a considerable distance below the casing 31, and near its lower end carries a friction-disk 39 engaging a pinion 35 free to turn on the shaft 28 and meshing with rack-teeth formed upon the bar 22, which carries a nailloader-block 36 of the transferrer 20. The loader has pivoted to it, under the block 36, a nail-retaining plate 37 (Fig. 4) held beneath the loaderblock-openings, by a pivoted and spring-controlled catch 38, against movement by a spring 57 while the transferrer is traveling forward. As the transferrer reaches its forward position over the jack 18, the catch 38 contacts with the jack and is thereby moved to allow the spring 57 to shift the plate 37 and free the nails to fall into the receiving orificesin the jack. The plate 37 is reset to retain a fresh gang of nails, by the contact of a projecting portion with a stop 56 (Fig. 3) associated with the block 15 as the loader returns to its position under that block.

-. Mounted on the shaft 28, below the gear 32 but above the rack-driving pinion .35, is a cam-disk 40, which controls the fork 34 by means of a recess 50 (Fig, 6) in its upper face, and a vertically disposed tripping finger 47, by a recess 51 in its periphery, as will be further explained. The cam-disk 40 is arranged to be driven only in one direction by the shaft 28 through a one-way clutch (not illustrated), which may be of the Horton type. The fork 34 is carried by the upper end of a rod 4l guided in the casing 31 to slide parallel to the shaft 28, the lower end of this rod engaging the upper surface of the cam-disk. The rod 41 is pressed downwardly by a spring 42 which abuts against a collar 49 on the rod. Mounted in a bearing in a supplementary bracket 43 attached to the bracket 12 is a pivot-rod 45 carrying a control-lever 46. The control-lever is pivotally connected to the above-mentioned tripping finger 47 near its lower end and is joinedby a spring 58 to the bracket 12 so as to hold the finger normally down. A spring-plunger 48 (Fig. 2) presses against the lower end of the finger to urge its upper end toward the collar 49. Thisicollar has a step-59,- and in Fig.- 2, the upper end of the finger 47 is shown tripped out from under and projecting above this step. In the operation of the machine, as will be explained, the controllever 46 is rocked anti-clockwise on its pivot to bring the upper end of the finger 47 under the step 59, so it may lift thefork-rod 41 when the control-lever is rocked in the opposite direction. This action engages the clutch-sleeve 33 with the sleeve carrying the bevel-gear 29, and causes rotation of the shaft 28 and thence movement of the loader to deliver to the jack 18 a load of nails previously deposited in'thenail-block 36. The gearing of the pinion 35 and the teeth on the bar 22, is such that a single complete rotation of the shaft 28 is more than suflicient to move the bar 22 through its full travel, so when that single turn is completed the nail-block will with certainty be over the jack. The bar 22 carries stops 52 and 53 (Fig. 1), which contact with

adjustable screws

54 and 55 mounted at the ends of the guideway for the bar. The limits of travel of the bar maybe determined by setting the

screws

54 and 55 to cause the block 36 to stop accurately under the block 15 and over the jack 18. The frictional connection 39 between the shaft 28 and the pinion 35 slips during the latter part of the rotation of the shaft, allowing the loader to dwell while-the nails drop into the jack 18. During this rotation, the cam-disk 40 is turned with the shaft by its clutch-connection. Immediately after the start of the above movement, the finger 47 is tripped from under the collar 49 by the edge of the cam-disk 46, as the recess 51 passes, the bottom end of the rod 41 then resting upon the camdisk until the rotation is completed, when the recess 50 in the upper surface of the disk arrives under the rod. The rod then enters this recess under the actuation of its spring 42 and thereby moves the sleeve 33 into engagement with the bevel-gear 32, as shown in Fig. 2. The direction of rotation of the shaft 28 is thereby reversed and the transferrer 20 is returned to its normal position. During this latter movement the cam-disk 48 remains stationary, under the permissive ac tion of its clutch-connection, with the lower end 1.

of the rod 41 resting in the recess 50. The camdisk retains this position, from which it started, until the loader is operated for another delivery of nails.

livering a fresh load of nails to the nail-block, when such rotation ceases. After the transferrer 20 has returned to its rear or normal position The rotation of the shaft 28 is maintained until the distributor 11 has finished oleagainst the stop 54, the friction member 39 on. I

the shaft 28 slips relatively to the pinion 35 until the distributor has completed its operation. Since it is possible that the teeth upon the clutchsleeve 33 might not be exactly in position to engage with those on the bevel-gear 29 when the control-lever 46 is rocked to raise the finger 47, it is convenient to provide a spring-yield at 42 between the collar 49 and the rod 41.

The control-lever 46, which, as above indicated, sets the nail-loader into operation, is also employed to trip the clutch of the distributor, and

cause that to count off simultaneously a fresh gang of nails while the previous gang is being delivered to the jack 18. The pivot-rod 45 of the control-lever carries fixed to its rear end a lever (Figs. 3 and 5), which, as will appear, acts as part of a locking device. This lever extends beneath an arm 62 pivoted at one end to the bracket 43. The other end of the arm 62 is connected to the clutch-trip of the distributor by a link 63,

so, when the control-lever 46 is rocked to lift the finger 49 and cause engagement of the clutchsleeve 33 with the gear 29, the distributor, from which the transferring mechanism is driven, is simultaneously started. In the construction illustrated, the pivot-rod 45 is adapted to be rock d to trip the clutches of the distributor and loader by a lug 64 fixed upon a rod 65. This rod is employed, under actuation of the treadle, to depress, through the usual lever 69 (Fig. 3) the abutmenthead 8 to measure the work. The tripping action is causedby the last portion of downward movement of the measuring rod 65, as the treadle is released and the head 8 elevated. In Fig. 2, the rod is shown in its lowest position, having rocked the control-lever.

n r (id There is also provided a device arranged to prevent actuation of the control-lever unless, since its previous actuation, the heel-attaching mechanism of the machine has been operated. A part of the machine, as a rod (Figs. 3 and 5) which on the actuation of the hand-lever 1'7 further presses the head 8 on the heel when the attaching nails are driven, is provided with a projection 71 which engages one arm 72 of a bellcrank-lever 73 pivoted on the bracket 43. The other arm of the bell-crank-lever projects over the end of the lever 60 opposite that engaging the arm 62. Upon this opposite end of the lever 60 are two stepped portions '74 and '75. When the rod 70 rises to apply final pressure in preparation for the driving of the nails, it lifts the arm '72 and moves the other arm of the lever 73 from the upper of the steps 74 against the action of a spring "16 which urges the arm toward said upper step. Under the actuation of the spring 58, the pivot-rod l5 then rocks backwa-rdly into position ready for actuation by the measuring rod 65. The second step on the lever 60 acts as a stop, limiting the distance through which the pivotrod 45, with the levers do and 60, may be rocked by the spring 58. This arrangement insures that two successive depressions of the rod 65 associated with the treadle-operated measuring mechanism shall not cause two successive actuations of the nail-delivering and transferring mechanisms, unless a power-operation of the machine, with a consequent driving of the previously delivered nails out of the jack,'has occurred. Such a result it attained because, once the lever 46 has been actuated by the projection 64 to cause loading of the jack, the end of the lever 60 has been thereby depressed to a position which allows the bell-crank-lever 73, freed by the descent of the rod 0 at the conclusion of a nail-driving operation, to assume, under the pull of its spring 76, the position shown in Fig. 5 above the step 74. This prevents a second rocking of the lever 60, pivot-rod 45 and control-lever 46 to start the distributor. At this time, the finger r? has been disengaged from the collar 49 by the cani periphery of the disk 40. Thus, if the oper ator treadles and depresses the rod 65 twice or more between any two successive actuations of the nail-driving mechanism, as he may do in order properly to seat a heel upon a shoe, the second and subsequent treadlings do not set the distributor or loader in operation, because of the lock imposed by the bell-crank-lever '13, which continues to hold the finger 47 raised. The interconnection or" the machine-starting, nail-delivering and transferring mechanisms provides for automatic delivery of nail-loads to the jack initiated by actions necessarily performed by the operator in attaching heels, and also prevents a second load of nails from being inadvertently delivered to the transferrer or from the transferrer to the jack before the previous load has been disposed of by the nail-driving mechanism. The distributor and the transferrer are set into operation simultaneously and dependent upon actuation both of the measuring and the naildriving mechanisms. As a result, the nail-driving mechanism may be operated more than once, as to test the working of the drivers, between the obtaining of successive loads of nails without causing more nails than will be required to be delivered to any point.

The sequence of operations of the apparatus will now be briefly indicated. It will be convenient to assume that the machine is standing ready with a load of nails in the jack. The operator places a shoe on the pack 18 and a heel upon the heel-seat of the shoe and lowers the abutment-head 8, by means of the treadle, to measure the heel and apply preliminary pressure, finally pressing the handle 1'7 to start the power-operation of the machine and cause the driving or" the nails. The rise of the rod '20, when final pressure is applied to the work under the power of the machine, removes the locking lever '73 from the lever 69, which has been up to this time held against a second actuation. The head 8 is not only depresssed by the rod 70 as the nails are driven, but is automatically released thereby as the drivers return to normal. The operator may or may not have removed his foot from the treadle before the head is so released, but, in any event, the treadle must be freed to obtain sufiicient clearance to remove the shoe from between the jack and the head. As the treadle is fully released, the rod 65 descends and depresses one end of the control-lever 46. This action throws in the clutch of the nail-distributor through the rod 63, and simultaneously actuates the rod 41, causing the loader, which contains a load of nails, to come forward and deliver to the jack. The time taken for the loader to reach the jack allows ample time for the operator to remove the heeled shoe. If there were obstruction to the loader by a shoe or by the operators hand, the friction-drive of the loader would allow and not cause damage. As the loader reaches its position over the jack and is arrested by the stop 53, its drive slips while the nails are dropped into the jack. of the loader through thedisk 40, clutch 33 and gear 32 now takes place, and said loader returns to its position under the block 15 in time to receive a new load of nails from the distributor,

which has been meantime counting off the nails for delivery. Just before the clutch 33 is thrown out, the retaining plate 21 of the distributor is shifted to allow the nails to fall down the tubes 16 into the loader. The gearing between the shaft 24: of the distributor and the shaft 28 of the loader is such that the loader is returned in time to receive a minimum number of nails. If the distributor is set to deliver a larger number, the friction-drive slips while the loader waits under the block 15 until such larger load has been completed and delivered. The drive to the loader stops as the clutch of the distributor is automatically thrown out, the loader remaining ready for the next shoe. The initial action of depressing the control-lever e6 allows the lever 73 to relock the lever 46 against a second actuation. During the time that the distributor is counting off a load of nails, the operator will be jacking another shoe preparatory to the measuring operation indicated at the beginning of the sequence of operations.

Should he so desire, the operator may delay the delivery of another load of nails to the jack by not allowing the measuring treadle to rise to its full extent as he removes a heeled shoe from the jack, but it will be realized that the mechanism above described renders it possible, with machines having independent actuators respectively for applying measuring pressure to the work and for applying final pressure followed by nail-driving, for the operator to actuate either the measuring or the nail-driving portion of the machine as often as he may choose in succession without causing any portion of the distributing or transferring mechanisms to be set in operation, as long The automatic reversal "L as he does not also actuate the other portion of the machine. However, if the mechanisms described were applied to a machine having a single actuator for measuring and nail-driving, arranged as such machines usually have been, any operation of the actuator sufficient to start the nail-driving mechanism would also actuate the measuring mechanism, and the release of the latter with the mechanism above described would produce the delivery of a fresh load of nails. In such a case, if operation of the driving mechanism without delivery of a nail-load were desired, the operator could first throw the distributor out of operation by shifting its driving belt, as is usually provided for with that type of mechanism. The cutting-out of the drive to the nail-distributor may also usefully be employed with the arrangement of independent actuators previously described, if both the measuring and driving devices are to be operated, without obtaining a fresh gang of nails.

In certain circumstances, in heel-attaching with a power-operated transferring mechanism of the nature described above, it may be found desirable to make the setting into operation or" the distributor and loader dependent upon some action of the machine operator which is not incidental to his necessary actions in attaching a heel to a shoe. In such case, the control-lever 46, instead of being provided with a part projecting under 2. lug upon the measuring rod 65, may be actuated by hand, having, conveniently, a downwardly depending arm which may be pushed to rock the lever, raise the finger 47 and trip the clutch of the distributor. In such a construction, the locking action of the lever '23, or an equivalent device controlled by t e power-operated nail-driving mechanism, may be retained without alteration, and the only difference in operation would be that the operator must trip the control-lever by hand after removing each heeled shoe from the jack. With this latter arrangement, both measuring and driving mechanisms can be actuated, it so desired, without a nail-load being automatically obtained.

Having described my invention, what I claim as new and desire to secure by Letters Patent oi the United States is:

1. Incombination, a fastener-inserting ma chine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means, and'means'movable under the power or" the machine for preventing repeated powenmovement of the delivering means until the fastener-inserting machine has been operated.

2.111 combination, a fastener-inserting machine having inserting mechanism, movable means fordelivering fasteners to the inserting mechanism, normally ineffective means for applying power to move the elivering means, a movable controlling member for rendering the power-applying means effective to move the delivering means, and means movable under the power of the )machine for temporarily locking the controlling member against movement in a position ineifective for the delivery of fasteners to the inserting mechanism.

3. In combination, a fastener-inserting machine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, normally ineffective means for applying power to move the delivering means, a movable controlling member for rendering the power-applying means effective to move the delivering means, a member for locking the controlling member against movement, and a membermovable into engagement with the locking member to release the controlling member.

4. In combination, a fastener-inserting machine having inserting mechanism, movable means ior delivering fasteners to the inserting mechanism, normally ineffective means for applying power to move the delivering means, a movable controlling member for rendering the power-applying means effective to move the delivering means, and means made active upon movement-of the controlling member for temporarily locking said member in an inactive position against delivery-controlling movement.

5. In combination, a fastener-inserting ma chine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, means for applying power to move the delivering means, a movable controlling memher for the power-applying means, means made active upon movement of the controlling member for temporarily locking said controlling member against movement, and means acting in the operation of the fastener-inserting machine for releasing the locking means.

6. In combination, afastener-insertingmachine having inserting mechanism, means for applying pressure to the work, movable means for delivering fasteners to the inserting mechanism, means for applying power to move the delivering means, a movable controlling member for the power applying means, means made active upon movement of the controlling member for temporarily locking said controlling member against movement, and means acting upon operation of the pressure-applying means for role sing the locking means.

'7. In combination, a fastener-inserting machine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means but being normally disconnected therefrom, means controlled by an element of the fastener-inserting machine during its operation under power for connecting the power-applying means to move the delivering means, and means for temporarily locking an element of the connections against movement.

8. In combination, a fastener-inserting machine 125 having inserting mechanism, means for applying pressure to the work, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means but being normally ineffective, connecting means controlled by the pressure-applying means for rendering the power-applying means effective to move the delivering means, and means acting upon the application of pressure to the work for temporarily locking an element of the connecting means.

9. In combination, a fastener-inserting machine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means but being normally disconnected therefrom, means controlled by an element of the fastener-inserting machine for connecting the power-applying means to move the delivering means, means for temporarily locking an element of the connections against movement, and means act ng upon operation of the fastener-inserting machine releasing the locking means.

10. In a heel-attaching machine, nail-driving mechanism, a loader movable to deliver nails to 59 the driving mechanism, a clutch for actuating the loader, connections for shifting the clutch, and a locking member movable into and out of contact with the connections only while said connections are in inactive position.

11. In a heel-attaching ,machine, nail-driving mechanism, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, connections for shifting the clutch, and a locking member movable intocontact with the connections to prevent engagement of the clutch, there being an element of the machine acting upon the locking member to free the connections and permit operation of the clutch.

12. In a heel-attaching machine, nail-driving mechanism, mechanism for applying pressure to the work, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, connections for shifting the clutch, and a locking member movable into contact with the connections after each operation of the loader, there being an element of the pressure-applying mechanism acting upon the locking member to free the connections and permit the operation of the clutch.

13. In a heel-attaching machine, nail-driving mechanism, measuring m chanism for the work, said measuring mechanism including a rod actuated by the operator, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, a lever provided with a portion arranged to shift the clutch, said lever being movable by the rod of the measuring mechanism, and a locking member for the lever made effective after each actuation of the rod.

14. In a heel-attaching machine, nail-driving mechanism, measuring mechanism for the Work, said measuring mechanism including a rod actuated by the operator and a rod controlled by the power of the machine, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, a lever provided with a portion arranged to shift the clutch, said lever being movable by the operator-actuated rod of the measuring mechanism, and a locking member for the lever made eifective after each actuation of said rod, said locking member being arranged for operation by the power-controlled rod to free the lever.

15. In combination, a fastener-inserting machine having inserting mechanism, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means but being normally disconnected therefrom, and means controlled by an element of the fastener-inserting machine during its power-operation for connecting the power-applying means to move the delivering means.

16. In combination, a fastener-inserting machine having inserting mechanism, a work-support and opposed abutment, means for moving the abutment and support relatively to apply pressure to the work, movable means for delivering fasteners to the inserting mechanism, means organized to apply power to move the delivering means but being normally ineffective, and means controlled by the pressure-applying means for rendering the power-applying means effective to move the delivering means.

1'7. In a heel-attaching machine, nail-driving mechanism, pressure mechanism for the work, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, and means controlled by power-operation of the machine for moving the clutch into and out of loader-actuating engagement.

18. In a, heel-attaching machine, nail-driving mechanism, a work-support and opposed abutment, mechanism for moving the abutment and support relatively to apply pressure to the work, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, and means under the influence of the pressure mechanism for controlling the clutch. I

, 19. In a heel-attaching machine, nail-driving mechanism, a loader movable to deliver nails. to the driving. mechanism, a clutch for actuating the loader, connections for shifting the clutch actuated by an element of the heel-attaching machine as an incident to its operation upon the L work and means movable with the loader and acting upon the connections for releasing the clutch.

20. In a heel-attaching machine, nail-driving mechanism, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, connections for shifting the clutch actuated by an element of the heel-attaching machine as an incident to its operation upon the work, said connections including a movable memher, and means for moving the member out of engagement with the co-operating element of the connections to release the clutch.

21.- In a heel-attaching machine, nail-driving mechanism, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, connections for shifting the clutch actuated by an element of the heel-attaching machine as an incident to its operation upon the work, said connections including a pivoted member, and a cam movable with the loader in contact with the pivoted member to permit the release of the clutch.

22. In a heel-attaching machine, nail-driving mechanism, measuring mechanism for the work,

said measuring mechanism including a rod actunails to the driving mechanism, a clutch for actuating the loader, and a lever provided with a portion arranged to shift the clutch, said lever being movable by the rod of the measuring mechanism.

24. In a heel-attaching machine, nail-driving mechanism, measuring mechanism for the work,

said measuring mechanism including a rod actuated by the operator, a loader movable to deliver nails to the driving mechanism, a clutch for actuating the loader, a lever, a finger pivoted upon v the lever and arranged to shift the clutch, said lever beingarranged for actuation by the rod of the measuring mechanism, and a cam movable with the loader and engaging the finger.

25. In a fastener-inserting machine, inserting mechanism, a fastener-distributor having means for successively separating fasteners to furnish a single load for the inserting mechanism, means for transferring the thus separated load from the distributor to the inserting mechanism, and power mechanism for operating the distributor and transferring means and arranged to effect the transfer of the separated load during the separation of another load.

26, In a heel-attaching machine, a jack having nail-receiving passages, nail-drivers operating in the passages, a nail-distributor, a loader arranged to receive nails from the distributor and deliver them to the jack-passages, power mechanism for operating the loader, and means for controlling the application of power to the loader as an incident to the power operation of elements of the heel-attaching machine acting directly upon the work.

27. In combination, a fastening-inserting machine provided with controlling members arranged for independent actuation by the operator to cause engagement of elements of the machine with the work, movable means for deliver- WILFRID THOMAS MINETT.