US1110316A - Lasting-machine. - Google Patents

Description

F. W. FARRAR.

LASTING MACHINE.

APPLICATION IILBD AUG. 16, 1911.

Patented Sept. 15,1914".

"UNITED srairns PATENT OFFICE.

FREDERICK WILLIAM FARRIAR, OF LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A

JERSEY.

CORPORATION OF NEW nasrme-macninn Specification of Letters Patent. j Patented Sept. 15, 1914.

Application filed August 16, 1911. Serial No. 644,477.

To all whom it may concern Beit known that I, FREDERICK WILLIAD/L Faruan, a subject of the King of England, residing at Leicester, Leicestershire, England, have invented certain Improvements in Lasting-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters onthe drawings indicating like parts in the several figures. 'This invention relates tolasting machines and, more particularly, to lasting machines of the type described in United States Letters Patent No. 584,7e4, dated June 15, 1897. d

Machines of the type referred, to, and commercially known as hand method lasting machines, employ a single pair of grippers for working adjacent portions of a shoe upper into lasted position successively by repeated operations of the machine. Tin-order to dispose of the fullness of the upper materialsat the toe and sometimes at other portions of the shoe, where the upper stands out from the last ano'ularly thereto, the grippers are given at certain times during the lasting operation, lateral and turning or plaiting movements by which the upper is crimped and folded in to make it lie smoothly upon the inner sole.

These plaiting movements are imparted to the grippers by cam actuated mechanism which includes a driver, operatively connected with means for turning the grippers and with other means for moving the grip pers laterally, and mounted on a rock shaft operated by a cam actuated lever. Owing to the positive drive given to the plaiting mechanism by this cam actuated lever, breakage of parts has frequently occurred.

lVith this in view, an object of the present invention is to cause the drive givento the plaiting mechanism through this lever to be effected yieldingly. To this end, in

accordance with this invention, a yielding lever is substituted for the above mentioned lever of the said patent. This arrangement obviates any chance of breakage through an accidental clogging of the moving parts of the plaiting mechanism. It also prevents injury to the stock byreason of thefrequent and marked variations encountered in the strength of the shoe upper. At the same time a uniformly yielding character is given both to the means for turning-the grippers and to the means for moving them laterally.

Preferably, the yielding lever through which the plaiting movements are effected lSfOllllGd in two parts, hinged together at then-"inner ends by a fixed pivot pin which constitutes a fulcrum'for the lever and between portions of the said lever parts,is nterposed a spring which forms a yieldmg connection through which movement is imparted by one part of the lever .to' the other. The outer endsof the two parts of the lever carry respectively a cam roll,

adapted to engage a cam on the main shaft of the machine, and a toothed segment, adapted to operate the abovednentioned rock shaft, which, as before stated,rimparts the plaiting movements to the pincers through suitable'connections. r

The characteristic features of the inven tion, including-certain details Ofconstruc tion and combinations of parts, will be'explained in the following description of so much of the machine of the above-mentioned Letters Patent as is. concerned with the illustrated embodiment of the invention. Various advantages of this embodiment of the invention, including its relative simplicity and manifeststrength and efficiency, will also be obvious therefrom to those skilled in the art. Reference should be had to the specification and drawings of the said Let ters Patent for explanation and illustration of all portions of the mac'hine'and details of construction not herein fully illustrated explained. Referring to the drawings: Figure 1 is a perspective view of a portion of the operating mechanism of the machine of the said patent, showing one embodimentof this invention 1n connect on therewlth; Fig. 2

is a detail in elevation and partly in section,showing the yielding lever and asso-i ciatedparts. Q I

The operating mechanism of the machine is supported by a frame work or head, mounted at the upper end of a supporting column. Journaled' in the head is a shaft D, the shaft D being the main driving shaft of the machine and having set upon it the cams and gears from which the principal operating parts of the machinereceive their movements. The grippers 10 have "their" usual lasting movements imparted to them through driving connections, which may be the same as those in the said patent, and which include a lever 18 from the front end of which gripper carrying bars are suspended, the lever 18 being arranged to be tipped about its pivot for raising and lowering the grippers. The outer tubular gripper carrying bar has a ball and socket connection with the lever 18 to permit freedom of movement. The inner bar or rod, which is connected to the movable gripper jaw, extends through said ball and through the lever 18, above which it is engaged by an arm 20 of a rock shaft adapted to be actuated from a cam 10 on the shaft D for closing the gripper jaws, which are again opened by a spring 23 when the cam 0 permits. The gripper-carrying bars extend through a sliding block 25 mounted to turn and to slide endwise in a yoke 26 at the front end of a sliding bar 28. The sliding bar 28 has a roll for engaging a cam 54 on shaft D tomove the grippers toward the machine, and the rear end of bar 28 is engaged by a lever, actuated by spring for moving the pincers from the machine when permitted by the cam 54:. These operating connections, it will be understood, give to the grippers their ordinary movements of lowering, closing, uplifting and overlaying the upper into position to befastened to the inner sole of the shoe.

For plaiting the upper, the grippers are moved laterally and turned by devices connecting them with a rocker 40 on the front end of a tubular rock shaft 4-2. which is continuously actuated during the operation of the machine through connections to be hereinafter described. The rocker 40 holds an adjustable block 1%, adapted to be shifted from a concentric position in the rocker where it receives no operative movements, to an eccentric position on one or the other side of the center of rocking movement, according to the direction in which it is desired to lay the plaits. A rod45, extending through the rock shaft 12 and having on its front end a pinion engaging teeth on the block 4%, has operative connections from its rear end to a manually controlled device for setting the block 44:. The block 14 is connected to a rod 60 extending to the sliding block 25 by which the lateral movements are transmitted to the grippers. The block 44 is also connected to a lever 66 fulcrumed at 68 and having at its upper end a rock bar 70 guided in the updraw lever 18 and held thereby in operative engagement with rack teeth on the ball head of the gripper bar by which connection the grippers are turned coincidently with their lateral movement for forming and laying atapering pl'ait. 1

The parts above described may, as shown, be substantially the same inconstruction and operation as the similar parts of said prior patent and further detailed description thereof will therefore be omitted.

For continuously operating the rock shaft 42 and the rocker a0 thereon, a rigid lever has heretofore been employed, the outer end of the lever having a gear formation adapted to engage a segmental gear 59 fixed to the rear end ofthe rock shaft 12 and the inner end of the said lever carrying a cam roll arranged to travel in a cam groove 61 of a cam on the main cam shaft D. The construction was such that, as heretofore slated, the rock shaft 42. its rocker or driver 1-0, and consequently the plaiting means for the gripper were at. all times positively actuatec. in accordazu-e with the present invention however, a yielding lever is substituted for the above mentioned rigid lever in order to insure thatthe lateral and tiuning movements ofthe grippers may be yieldingly effected and thus to prevent bro: lcage.

The lever 80 is, formed in two parts 82 and 8st. The part or arm 82 of lever 80 has at its inner end a forked portion into which fits a lug formed at the inner end of the lever arm Set. A stub shaft or pin 86, secured at one end to the frame of the machine, passes through a collar 88 extending through holes formed in the arms of the forked portion of the lever part 82 and through a hole in the lug on the lever part 8-1. The arrangement is such that the lever parts 82, 84: have a rule hinge connection at their inner ends, and the lever 80 is fulerumed for movement about the pin 86. A spring pressed plunger 90 carried in a boss 92 onthe lever arm 8& is adapted to engage an abutment 94 on the lever arm 82. Preferably the boss 92 carrying the spring pressed plunger 90 and said plunger are arranged to extend in the general direction of the length of the lever arm 8 1, this arrangement having the advantage of compactness where, as in the illustrated embodiment of the invention, a lever must be used in a restricted space in the machine.

For effecting the lateral and turning or plaiting movements of the grippers, the 0pposed ends of the lever 80 have operative connections to the cam 61 on shaft D, and

to the rock shaft 412,

the said connections being entirely like those provided for the corresponding rigid lever heretofore used in themachine of the said patent. These connections comprise a cam roll 96, carried by the outer or rear end of the lever 82, and arranged to engage the cam 61 on the shaft D, and a toothed segment or rack 98 onthe outer or forward end of the lever arm 84, and adapted to mesh with the segmental gear 59 on the rock shaft 12. The construction is such that movement of the lever 84 in; one direction, to operate the rock shaft 42 for imparting lateral and H turning or plaiting movements to the griparms during the two movements being clearly shown in Fig. 2. Conveniently, a screw block 102 is provided at one end of the boss 92 for the purpose of enabling the tension of the spring which acts on the plunger to be varied and adjusted as desired.

Although, as above stated, in this embodiment of the invention the lever arm 84 .is

, plaiting.

yieldingly moved in one direction and positively operated in the other direction, it is obvious that, if desired, the parts 82 and 84 can be so arranged that the said arm 84 may be yieldingly moved in both directions as, for example, by substituting a spring pressed plunger for onev of the above-mentioned abutments. Such a construction is particularly adapted for use when it is desired to change the direction in which the plants are formed, in which case the plaiting mechanism would always be yieldingly actuated regardless of the direction of the Various other changes and modifications such as will readily occur to those skilled in the art may be made without departing from the spirit and scope of the invention.

Having explained the nature of thisinvention, and described in what manner the same mav conveniently be embodied, I claim as new and desire to secure by Letters Patent of the United States.

1. In a lasting machine, a lasting device,

"a cam for operating said device, and an operative connection between the cam and said device including a lever comprising two relatively movable parts fulcrumed on a common pivot, one of said parts having a chamber and a spring pressed plunger mounted in the chamber, said chamber and said plunger extending in the general direction of the length of said lever part, and the other of said parts having an abutment engaging said plunger whereby relative movement of the lever parts is allowed for yieldingly transmitting motion from the cam to the lasting device.

2. In a lasting machine, grippers, operating mechanism for the grippers including means for turning the grippers and means for moving them laterally, a two-part lever through which the said movements are effected, the said lever being mounted for oscillation about a fixed pivot and having its parts hinged together to permit of relative movement about the said pivot, means for positively moving one part of the lever about the said pivot and a spring pressed plunger seated in the other part of the lever and arranged to engage the positively operated part of the lever to cause the said movements of the grippers to be yieldingly effected.

3. In a lasting machine, grippers, operat movements to be yieldinglyeiiected, the said lever parts being provided with a rule hinge connection at their inner ends to cause the return movement of the lever to be positively effected; r

4. In a lasting machine, the combination with grippers and operating DIGClIELIHSm' lEOI the grippers including means for turningthe grippers and means for moving them laterally, ot the two-part lever 80 through which the said movements are efi'ected, said lever being mounted for oscillation about a fixed pivot and comprising the arm 82 and the arm 84 hinged together to permit of relative movements about the said pivot, means for positively moving the lever arm 82 about the said pivot, the abutment 94 on the lever arm 82 and a spring pressed plun ger 9O seated in the lever arm 84 and arranged to engage the abutment 94 on the lever arm 82 upon movement of the lever arm 82 in a direction to eflect the said movements of the grippers.

In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

FREDERICK WILLIAM FARRAR.

Vitnesses:

JOHN RICHARD LAW, GLAUD BENNION.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images