Lasting apparatus.

W, B. KEIGHLEY.

LASTING APPARATUS.

APPLICATION FILED DEO. 2, 1909.

982,140.

Patented Jan. 17,1911.

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THE NORRIS PETERS CO., WASHINGTON. D. C.

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UNITED .STATES PATENT OFFIC .·

WILLIAM B. KEIGHLEY, OF VINELAND, NEW JERSEY, ASSIGNOR TO THE KE· COMPANY, OF VINELAND, NEW · JERSEY, A CORPORATION OF MW JEBS'

LASTING APPARATUS. . ··

982^1140. Specification of Letters Patent. Patented Jan. 17. 191 , Application filed December 2, 1909. Serial No. 530,929.

To aUnbhom it may concern:

Be' it known that I, William B. Keighley, a citizen of the United States, residing in Vineland, New Jersey, have invented cer5 tain Improvements in Lasting Apparatus, of which the following is a specification.

One object of my invention is to provide a combination of parts whereby a workman is enabled to rapidly draw the upper of a 10 shoe into position and firmly attach it to an insole by means of a suitable adhesive in place of the tacks or other devices previously employed.

I further desire to provide a relatively 15 simple and conveniently operated apparatus for. applying suitable quantities of an adhesive to the Insole of a shoe so as to provide means whereby the properly stretched upper may be held to said insole prior to 20 the operation whereby it is stitched thereto.

It is also desired to. provide an apparatus whereby an adhesive may be deposited at the desired point on a shoe during the process of its manufacture, for holding together 25 certain of its parts, and so avoiding the necessity of tacking said parts with the consequent loss of time, danger of breakage of needles, knives, and machine parts, in subsequent operations, and the possibility of 30 leaving in the finished shoe a tack or portion thereof.

Another object of the invention is to provide an apparatus for simplifying the methods of lasting.

A further object of my invention is to provide a combined upper - stretching and adhesive- applying device, whereby, when the upper has been brought to proper form and tension, a suitable quantity of adhesive 40 may be delivered at the particular spot desired, and the upper thereafter caused to be firmly..atiached to the insole; it being also desired to provide novel means for heating and supplying suitable amounts,of adhesive 45 to said device.

These objects and .’other advantaveo’¹⁰ends I secure -as hereinafter—’ erence. being ha-d-to.-^:T and 3, are-vertical sections of the control· ling mechanism for the apparatus of Fig. Ij showing the valve thereof in its two po. ' sitions. . *

In the above drawings, 1 represents a pair of laster’s pliers having handles 2 and 2“ jaws 3 and 3^a, and a hammer, head or fulcrum piece 4. A valve casing 5 is rigij attached to this instrument by means \ screws or bolts 6, and the whole , device \ mqvably supported by or hung from a resei yoir '7 by means of a link 8. Said reservoiy is preferably suspended from ’ah overhead supporting structure 9 by a spring TO sc that it may be moved freely, and it is pro. yided with an airtight cover 11 so thatjher^.,. ... is no danger of leakage from its interior A pipe 12 connected to a source foTheatec air under a suitable pressure, such as 11 pounds to the square inch, is alAp ippfiected to the interior of the reservoir .Tj.jiind-if found necessary, as in cold weather, .said reservoir may. be further, heated, s by gas de^L_flivered from a pipe 13. A pipe ills’ebnnected to the upper portion of the’Teservpir 7 so as to deliver heated air under pressure to the valve casing 5 to which,it.is^jsoj,qQll-_;nected, and in order that such casingj^yiffi the pliers 1 may be free to move, t^sipipe i is provided with a universal cpijip^ngjlS. A second pipe 16 leads from the-bobbin/of the reservoir 7 to the casing, 5 is provided with a universal coupjjngi 17;; ' there being suitable valves 18 ancL,l$, > the necessary fittings, clean out jpjj^s^>qfc,y included in the pipes 14 and 16 whereby the quantities of material passing through them may be properly adjusted. - j

As shown in Figs. 2 and 3, the'valve casing 5 has a cylindrical bore im which .’.js ; mounted a plunger or other suitable’ valve ^!2Q, ..the stem 20?· of which,projects substantially parallel with the general handles ^.and,2^a and. .

or thumb piece 21.

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982,140 ie valve casing is closed by a redrew 24 and has a passage to which 16 is connected. It is also interj a second passage 25, into the upper /which the pipe 14 enters, while its nd is connected to a nozzle or outlet 3, so placed as to be capable,of dismg material adjacent to the jaws of f pliers. The valve 20 when in its exv .ie rearward position, shown in Figs. 1 2, has its forward end terminating at y q; rear side of the passage 25 and also has ' passage or port 27, which under such normal conditions, is in line with the passage ^; :5^a to which is connected the pipe 16. The proportions of the valve 20 are such that vhen it is moved forwardly to the maximum ' extent, its port 27 is brought into line with ¹ - massage 25, and in order that the valve o normally occupy its rear position, I (vide an auxiliary passage 28 leading Lm the upper portion of the passage 25 to /¾ space 29 of the cylindrical bore immeliately to the rear of the screw 24; so that Llthough it is possible to push forwardly he valve stem 20^a against the air pressure xisting in the forward end of said bore, .........he removal of the force acting to hold it '^Worward permits it to be immediately retimed to its normal condition by the action >f the air delivered through this auxiliary passage 28 and acting upon its forward end.

Under operating conditions, the reservoir is partially filled with pitch, though other suitable adhesives may be employed; so that they fulfil the condition of quickly hardening after application to a shoe and are capable of properly holding the parts together or in the positions in which they are •placed. Heated air under pressure is then admitted to the upper part of the reservoir through the pipe 12 and if desired further heat may be provided by a gas flame supplied from the pipe 13. Owing to the heat, the pitch is maintained in a liquid condition, ⁴ and under the action of the air pressure is forced through the pipe 16 into the cavity 27 of the valve 20. The shoe to be lasted being properly supported, the operator, by means of the pliers 1, grasps a portion of the upper and draws or stretches it toward and over the edge of the insole in the well known manner;—the scale being in such heated air is discharged from ⁿ upon the surface of the insole 'he svtne adjacent to the ....... '-h is to be applied.

these pipes, forces the pitch out of the valve 65 into and out of the nozzle 26. It will be noted from the drawings, that this nozzle pipe 26 is so placed as to discharge said pitch immediately to the rear of the jaws 3 and 3^a so that under operating conditions, 70 it is delivered upon the insole, of the shoe at the desired point. Immediately thereafter the operator presses the particular spot of the upper which is held under tension down upon the globule or body of pitch 75 thereon, whereby said part is firmly and immovably held in place. In the meantime the removal of the pressure upon the thumb piece 21 of the valve stem 20^a permits the valve to be returned to its normal position 80 against the stop 22, under the action of the air pressure acting upon its forward end through the auxiliary air passage 28, and immediately upon its reaching such position, its cavity is again filled with melted 85 pitch from the pipe 16. The flow of air through the pipe 14 may be regulated by adjusting the valve 19 and similarly the flow of melted pitch through the pipe 16 may be regulated by the valve 18. If found 90 necessary, the main cylindrical cavity of the valve casing 5 may be opened for cleaning by the removal of the screw 24; there being also clean out plugs in the pipe 16. After one of the parts of the upper has been fas- 95 tened to the insole as above described, another part immediately adjacent thereto is similarly treated, and so on around the edge of the insole until the lasting operation is completed. ¹⁰⁰

Under working conditions, I have found that the use of pitch as above described, satisfactorily holds the upper to the insole, prior to and during the welting or equivalent operation whereby the two parts are 105 permanently sewed together; it being noted that such means of connecting said parts is greatly superior to the tacking ordinarily employed, especially since there is no danger _;of breakage of the needles nor necessity for 110 anything similar to the well known tack removing operation. Moreover, there is no possibility-of injury to the foot of a wearer of the shoe, as has been frequently found to occur when broken tacks were accidentally 115 permitted to remain in the finished shoe.