US1249671A - Fastening-inserting machine. - Google Patents

Description

W. T. B ROBERTS. FASTENING INSERTING MACHINE.

APPLICATION FILED MAR. 16. 1916- Patented Dec. 11,1917.

2 SHEETS-SHEET I.

w. T. B ROBERTS. FASTENING m'semma MACHINE.

APPLICATION FILED MAR. 15. ISIG. 1151?? HI-1:3 W Y Patented Dec. 11, 1917.

2 SHEETS-SHEET 2.

Ii 12 M q tlrttrrniu Err-tenths nucitrn'srrain nonnnrs, or nnlcnsrnn, ENGLAND, ASSIG-NOR To 'unrrnn srron :trncnnvnntr ooiuran'r', or rn'rnnsolv, NEW JERSEY, A cortisone JLlZON OLE NEW JERSEY.

'lEAS'll'EN LthlGr-IIDTSERTING MACHINE.

specification of Letters Patent;

Patented Dec. 11, 191 7.

application filed March 16, 1916. serial No. 84,614.

To all whom it may concern:

Be it knoivn that l, l l irmaiu l. l3. ltorn nnrs, a subject of the King 011: England, residing at Leicester, Leicestershire, England, have invented certain improvements in has tening-lnserting ll lachines, of which the tollowing description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the sevenl figures.

The present invention relates to machines tor iitiserting "l asteninpgs and is herein illustrated as embodied in a fastening inserting; machine intended especially for use in the manufacture of boots and shoes.

Considered broadly, machines for inserting tastenings in boots and shoes may be divided. into two classes, namely, machines which are adapted to handle previously termed l astenings and insert them into the "Work and machines Which term. the fastenings from a length or strip of continuous material such as Wire and then insert them into the Work. Both types of machines are usually constructed to deal With fasteninp's of more than one length or size and are provided with means whereby in a given case tasteninp s oi? the desired character may be selected according to the nature oi? the work.

ll h le these machines ordinarily have provision for adjusting the fastening driv .ing mechanism to give a blow of definite force, this initial adjustment usually ma do sul'liciont to insert the longest or largest fastening with Which the machine capable of dealing, otherwise the operator vvould be required continually to interrupt his worlrand stop the machine to malre further adjustments when inserting 'l astenings olt diilereut character. In consequence, the unnecessary force exerted by the driving mechanism when inserting all but the longest or largest lit tenings results in excessive vibration and wear of the machine and improper insertion of the itasteninggs in the work. Attempts have been made to regulate the force of the blow of the fastening driver by elevating the driver varying; amounts, thus varying the length oi the operative stroke of the driver with a view to regulating the power of the driving blow by initia ting thedriving stroke at one point or another according to the nature of the Work. It has also been at tempted to vary the force of the driver blon by an adjustable stop or buffer to regulate the point in the driving stroke at Which the driver is arrested.

The general object oi. the present inventron 1s to provide an improved fastening insorting machine capable of inserting fasten mgs having dirferent characteristics accord ing to the nature of the Work, which, While retaining all the advantages of fastening inserting machines as heretofore constituted, Will be so constructed that unnecessary vibration and consequent Wear and tear off the machine will be reduced to a minimum.

A further important object of the invention is to provide in a fastening inserting machine mechanism organized so that an adjustment or]? an operative movement of the machine, such, for example, as an adjust ment oi the fastening supplying mechanism to vary the character of fastening supplied, Will also and preferably correspondingly vary the power of the blow of the fastening driver to adapt the machine properly to ditterent characteristics of the Work operated upon, such as the Work thickness.

In accordance With these objects of the invention the fastening inserting machine herein shown and described as illustrating a preferred embodiment of the invention includes novel means for controlling;- the energy imparted to the driver in accordance with the character of the fastening tobe inserted. As shown, the construction is such that the limit of operative throw of the driving mechanism is constant regardless of the amount of energy imparted to the driving mechanism.

These and other objects and features ot the invention will be apparent from the tol lowing detailed description read in connection with the accompanying drawings, and the various novel features of the invention are set forth in the appended claims.

Although the invention is herein described and claimed with particular reference to its applicability to fastening inserting machines of the type set forth in United States Letters Patent No. 591,658, granted Oct. 1:, 1897, to Fl. Robinson, it is contemplated that the invention as a hole or features ating movement.

thereof may have other and different uses including use in fasteninginserting machines of other types. it is also co templated that various changes in the illusrated mechanism may be ma e without departing from the spirit and scope of the invention. For example, the invention is .not necessarily limited to an en'ioodiment comprising two springs, as above described, since other and equivalent spring means may obviously be used. It is also contemplated that the above described mechanism may be advantageously and readily incorporated in a machine adapted to insert previously formed fastei l of various characters or le gths, and particularly a machine for inserting previously formed fastenings of the type in which the fastening selection is controlled by work calipering mechanism.

Referring to the drawings,

Figure 1 is a front elevation of a portion of the upper part of a machine having the present invention incorporated therein; and

Fig. 2 is a side elevation of a portion of the head of the machine.

The illustrated machine is of the type adapted to sever a length of fastening from a coil of wire and insert it into th work. The coil of wire 2 is mounted on a bracket attached to the machine frame and the wire is led between the cooperating feed rolls l and 6 which are operated through a connection with the main shaft to feed intermittently the proper length of fastening to be inserted into the work. The feed wheels a and 6 are rotated through a pawl 8 which engages a ratchet wheel 10 carried on the shaft 12 upon wl ich the feed wheel is mounted. In order that the length of the fastenings may be varied in accordance with the character of the work a shield 1% is interposed between the feed wheel and the pawl 8 in such a manner that the pawl is prevented from engaging the ratchet wheel during predetermined portions of its oper- The shield 1st is adapted to be moved to different positions of adjustment to vary the amount of rotation imparted to the feed wheels by the pawl through a hand lever 16.

The fastening inserting or driving mechanism comprises a driver bar 18 mounted to reciprocate vertically in guideways 20 of the machine frame and having clamped to its lower end a driver 28. At its upper end the driver bar 18 is provided witl an adjustable stop 30 which limits the throw or movement of the driver in driving direction. The driver bar '18 is raised into its operative po sition by a cam 32 mounted on the main shaft 3-1 of the machine. This cam, which is conveniently the same as that shown in said above mentioned patent, is adapted to engage a projecting lug 36 secured to the driver bar 18 to raise the bar into an operative position and thereafter to clear the lug and allow the driver to descend to a uniform or fixed position. The means for imparting driving energy to the driver is herein shown as coinprising two coiled torsion springs 38 and lo surrounding the shaft -12 end to end the shaft having a bearing in a bracket on the machine frame. The forward end of the spring 38 is secured to the hub ll of tl e driver bar actuating arm 4:6 pivoted on the sha ft l2 and has its outer end bearing on the driver bar through a connecting link lS. The rear or outer end of the spring 40 is secured to a collar 19 mounted on the shaft said collar being adjustable by the set nut 50 to vary the initial tension of the springs relatively to the driver bar.

Tn accordance with the present invention the rate of travel of the driver in driving direction is automatically varied without effecting the length of the driving stroke. In the illustrated cmbodin'icut this is accomplished by varying the length of driver spring put under tension by the movement of the driver into operative position. shown., the hand lever 16 is provided with an upwardly projecting arm 52 the upper end of which presents a curved surface haw ing ratchet teeth 54-. Positioned above the arm 52 is a vertically disposed plunger 5:) slidably mounted in a hearing so projecting from the machine frame and having its lower beveled end in engagement with the ratchet teeth 5% on the arm.

The upper end of the plunger 3.3 is counected by a link 58 to a ring 0 which is recessed on one side (see Fig. 1) to receive second rin member 62 l djustably secured to the ring (30 by the set bolts oil passing through slots 65 in the member (3:2. The ring member 62 is provided with an inwardly projecting stop lnterposed between the iii-- ner ends of the springs 38 and h) is a colla. 68 loosely mounted on the shaft l2 and having slots provided in the hub of the collar to receive the adjacent ends 70 and 72 of the respective springs whereby relative rotary movement between the collar and the springs is prevented. The collar has mounted for rotary movement thereon the ring member 60 and is provided with an abutment 'H- which is adapted to engage the cooperating stop 66 of the ring member me when rotary movement is imparted to the springs 38 and a0 and the collar (38 as the driver bar is raised by the cam 32 into operative position. A spring 76 connected at one end to the link 58 and at the other end to the machine frame tends normally to maintain the plunger in engagement with the ratchet teeth.

The operation of the machine is as follows: The hand lever 16 is first raised or lowered to determine the length of wire to be fed by the feed wheels in accordance with ltl abutment 7d of the rotatable collar.

till

nsaaevi the character of the'ivorlr to be operated upon. lit the machine is to lform and insert the shortest length of fastening which can be inserted by the machine the handle 16 will be raised thus allowing the plunger 55 to drop under the influence of the spring 76 and causing the ring 6:2 to be rotated a predetermined distance. Upon the starting of the machine the cam engages the lug on the driver bar and raises the driver against the tension of the springs 38 and ll which are thereby rotated together with the collar 68., dines the shortest fastening is to be there fore inserted in the Work only the minimum amount of driving force is necessary so the stop is not necessarily in position to be engaged by the abutment 74: of the collar as it is rotated and therefore allows substantially the entire lengths of both springs to be wound up or become operative preliminarily to imparting driving energy to the driver.

mi lion the character of the work is such that a longer fastening is to be inserted the hand lever 16 is lowered to bring a higher part oi the arm 52 beneath the plunger thus raising it and causing the ring member 62 to revolve and position the stop nearer the As the driver is then lifted by the cam 32 the abutment T l engages the stop 66 of: the ring 62 after a certain amount of rotation and tension is applied to both springs, the amount depending upon the position oi the stop and the length of fastening to be inserted. lhereatter the rotation and consequent tension applied to the springs is confined to the spring 38 as the spring is rendered ineftective thus a greater driving energy will be imparted to the driver. When the ma chine is to insert the longest fastening of which the machine is adapted to handle the step will be moved into direct engagement with the abutment by the raising of the phinger before the machine is started in which event the tension is applied wholly to the single spring 38. thus giving the maximum force of blow to the driver.

lit will be noted that the driver has a constant limit of throw in operative direction or, in other words, has a fixed position into which it is moved under the influence of the spring or s n-ings regardless of the amount of energy it is desired to impart to the driver.

Having thus described my invention what l claim as new and desire to secure by Let-- ters Patent of the United States is 1. In a machine for inserting tastenings, a fastening inserting driver having a constant limit of driving movement, means for imparting driving movement to the driver, means or adjustably controlling an operatire movement of the machine, and connectic between said controlling means and the driver operating means constructed and or ranged to cause an adjustment oi said controlling means to vary the rate of driving movement ot the driver.

2. In a machine for inserting tastenings, a tz'is'tening inserting driver having a constant limit of throw in driving direction, mechanism for operating said driver comprising means to impart driving energy to the driver, and means for adjustably controlling an operative movement of the machine constructed and arranged to regulate also the driving energy imparted to the driver by its operating means.

3. In a macliine for inserting tastenings, a fastening inserting driver, means for actuatin said driver, means .tor varying the rate of travel of said driver in driving direction without attecting the length of the driver stroke, and means for adjustably regulating an operative movement of the machine con structed and arranged to control. also said means tor varying the rate of travel or" the driver.

41-. lln a machine for inserting iastenings, a fastening insertin driver having a constant limit of throw in driving direction, spring operated means for actuating said driver in driving direction, means for regulating the etl ective strength of said spring operated means, adjusting means for controlling an operative movement of the machine, and connections :trom said last-named means to said spring operated means constructed and aranged to regulate the effective strength of. the spring operated means.

5. in a machine for inserting tastenings, a fastening inserting driver having a predetermined limit of throw in driving direction, means for actuating said driver, fastening supplying mechanism, means for adjustably I controlling the length of fastenings supplied by the tastenin supplying mechanism, and connections between said controlling means and the driver actuating means constructed and arranged to control variably 1.1

the operation of the driver actuating means.

6. In a machine for inserting i astenings, a "fastening inserting driver having a predetermined limit oi throw in driving direction, means for a tuating said driver, Wire feeding means, and means for adjustalfily controllin said wire feeding means to vary the length of tastenings supplied by the fastening supplying mechanism constructed and arranged to vary also the operation of the driver actuatingmeans.

7. i: machine for inserting tastenin 's comprising a reciprocating fastening inserting driver having a predetermined throw in driving direction, means for effecting a reverse movement of said driver, spring means arranged to cause movement of said driver in driving direction, and means for determining the character of fastening to be inserted by said driver constructed and an Eat nzaae'za ranged to vary also the influence of said spring on said driver in accordance with the character of fastening supplied.

8. A machine for inserting fastenings comprising a fastening inserting driver, spring means for imparting energy to said driver during its driving movement, and means operatively connected with said spring means to render a predetermined part of the spring means inoperative whereby the forceimparted to the driver may be varied.

9. A machine for inserting fastenings comprising a reciprocating fastening inserting driver having a predetermined throw in driving direction, spring operated means for imparting energy to said driver during its driving movement, and means adjustably controlling an operative movement of the machine constructed and arranged to render a part of said spring means ineffective upon movement of the adjusting means whereby the power of the blow imparted to the driver may be varied.

10. A machine for inserting fastenings comprising a reciprocating fastening inserting driver having a predetermined throw in driving direction, means for moving said driver into operative position, spring means adapted to impart energy to said driver for its driving movement and controlling means for said spring means constructed and arranged to utilize a predetermined portion of said last-named means to adapt the machine to a. characteristic of the work.

11. A fastening inserting machine comprising, in combination, fastening supplying means, a fastening inserting driver having a constant throw in driving direction, selective mechanism for determining the character of fastening supplied by said means, driver actuating means, and means operated by said fastening selecting mechanism to control said driver actuating means to vary the force of the blow of said driver in accordance with the character of fastening selected.

1:2. A fastening inserting machine comprising, in combination, fastening supplying means, a fastening inserting driver, mechanism for determining the character of fastening supplied by said means, driver actuating means, and means operated by said fastening selecting mechanism to vary the rate of travel of the driver in accordance with the character of fastening selected without affecting the length of the driver stroke.

13. A fastening inserting machine com prising, in combination, fastening supply ing means, a reciprocating fastening inserting driver, mechanism for determining the character of fastening supplied by said means, spring operated means constructed and arranged to impart energy to the driver for its driving movement, and means controlled by said fastening selecting mechanism for regulating the driving energy imparted to the driver by said spring means in accordance with the character of fastening selected.

1%. A fastening inserting machine comprising, in combination, fastening supplying means, fastening inserting driver, mechanism for determining the character of fastening to be supplied by said means, spring means adapted to impart energy to the driver during its driving movement, and means operated by said fastening selecting means for rendering a portion of said spring means inoperative as said mechanism is operated to select the proper character of fastening in accordance with the requirements of the work.

1.5. A fastening inserting machine comprising, in combination, wire feeding mechanism, fastening inserting driver, means for imparting energy to said driver during its driving movement, means for varying the length of wire to be fed by said wire feeding mechanism, and means operated by said last named means for correspondingly regulating the driving energy imparted to said driver.

16. A fastening inserting machine comprising, in combination, fastening supplying means, a fastening inserting driver, mechanism for determining the character of fastening to be supplied by said means, means for imparting energy to said driver during its driving movement, and means controlled by said fastening selecting means for regulating the driving energy imparted to said driver.

17. A fastening inserting machine comprising, in combination, wire feeding mechanism, manual means for varying the length of wire to be fed by said wire feeding mecha nism, a reciprocating fastening inserting driver, spring means for imparting energy to said driver during its driving movement, means for regulating said spring means to control the driving energy imparted to said driver, and connections between said driver spring regulating means and said manual means constructed and arranged to operate. said regulating means upon movement of said manual means.

18. A fastening inserting machine com prising, in combination, wire feeding mechanism, manual means for varying the length of wire to be fed by said wire feeding mechanism, a reciprocating fastening inserting driver, spring operated means for imparting energy to said driver during its driving movement, means constructed and arranged to render a predetermined portion of said spring ineffective, and connections between said manual means and said last mentioned means for determining the portion of said lltl Tilt) meager/r spring to be rendered ineffective according to the length of wire to be fed by the wire feeding mechanism.

19. In a fastening inserting machine, in

combination, a. reciprocating fastening inserting driver, torsion springineans having a part secured to said driver and another part rigidly held, an adjustable member attached to said spring means between said parts and having an abutment, power operating means for raising said driver against the influence of said spring means, and means for engaging said abutment during upward movement of the driver to render part of the spring means inoperative to vary the force of the blow of the driver.

20. A fastening inserting machine having in combination, wire feeding mechanism, manually operated means for varying the length of wire to be fed by said wire feeding mechanism, a reciprocating fastening inserting driver, a torsion spring device having one part secured to said driver and another part rigidly held, an adjustable mem ber attached to sand spring device between said parts and having an abutment, power operated means for raising said driver against the influence of said spring device, and connections between said member and said manual means constructed and an 'anged to engage said abutment during upward movement of the driver and thereby render a part of said spring device inoperative to vary the energy imparted to the driver according to the length of wire to be inserted.

21. A machine for inserting fastenings comprising a reciprocating fastening inserting driver, means for moving said driver in one direction, a spring device arranged to cause movement of said driver in driving direction, and means co-acting with said spring device constructed and arranged to energize the entire device during a part of the movement of the driver in said firstnamed direction and thereafter to energize a portion of the spring only.

22. A machine for inserting fastenings comprising a reciprocating fastening inserting driver, a spring device arranged to cause IHOVGlIlGlli] of said driver in driving direction, means for effecting a return movement of the driver, and means co-acting with said spring device constructed and arranged to apply energy to the entire device during a part of the return movement of the driver and thereafter mainly or wholly to a portion of the spring device only.

23. it. machine for inserting fastenings com in'ising areciprocating fastening inserting driver, means for elevating said driver, spring means arranged to cause movement of said driver in driving direction, and means enacting with said spring means eonstructed and arranged to apply energy to the spring means during upward movement of the driver, said means operating automatically to cause energy to be applied uniformly to the spring means as a whole or wholly or mainly to a part of the spring means only.

2%. ln a fastening inserting machine, in combination, a reciprocating fastening inserting driver, a spring device arranged to cause n1 veinent of said driver in driving direction and having an, abutment, means for moving said driver reversely against the in fluence of the spring device, and a cooperatin g abutment constructed and arranged for free positioning movement in the path of said first abutment whereby the travel. of said first alnitment during reverse movement of the driver variably limited by said second abutment in testimony whereof ll have signed my name to this specification.

Wlllilhldill Wllltllllriti llUUlillldHfilil ROBERTS.

topics oi. this patent may be obtained for five cents each, by addressing the "commissioner of Patents, Washington, Ill. til.

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