US2026726A - Apparatus for treating adhesives - Google Patents

Description

Jan. 7, 1936. Q A

I APPARATUS FOR TREATING ADHESIVES 2 Sheefs-Sheet 1 Filed Feb. 23, 1934 [RUR'OT' Ciariep JZBQZZZ \zy Mf Earns ,6.

Jan. 7, 1936. c. A. BALL Y APPARATUS FOR TREATING ADHESIVES 2 Sheets-Sheet 2 Filed Feb. 25, 1934 Ivzvento? U/aarzep ailaZZ Patented Jan. 7, 1936 UNITEDA'STATESQ PATENT OFF-ICE APPARATUS FOR TREATING ADHESIVES Charles A. Ball, Chicago, 111., assignor to Chicago Belting Company, Chicago, Ill., acorporation of Delaware Application February 23, 1934, Serial No. 712,457 i 6 Claims.

My invention relates to an improvement inapparatus for manufacturing belts and has for one purpose the provision of improved means for applying an adhesive to the separate belt pieces. Another object is the provision of improved means for treating the adhesive prior to its application. Another object is the-provision of means for tim ing the .adhesivetreatment. Other objects will appear from time to time in the course of the specification and claims.

I r I illustrate my invention more or less diagrammatically in the accompanying drawings, where Figure '1 is a general plan view; Figure 2 is a general side elevation; Figure 3 is a plan view of a unit of the adhesive treating means and Figure 4 is a side elevation of the structure of Figure 3, with parts in section.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, A generally indicates any suitable supporting member, for example a table, upon which the pieces to be assembled may be positioned. It may include for example the legs or supports A and the braces A A is another similar table or support. A A indicate belt guiding arms, connected by a cross piece A which are adjustably mounted on a shaft or rod A at the outer end of thetable A .It will be understood. that these arms may be adjusted apart to receive belt of varying width.

Positioned between the two tables is any suitable press structure. This press is generally indicated as B but as the details do not of themselves form part of the present invention it is not described or shown in detail.

C generally indicates a reel carriage which may C C indicate any suitable upwardly extending supports .upon which may be mounted any suitable reel generally indicated as including a drum C about which may be rolled the belt which will later be described. C are any suitable guide members which may be positioned upon the drum, for example, by penetration of the aperturesC Any suitable means may be employed for rotating the drum C includinafor example, a feed ratchet wheel D the teeth of which are engaged by a dog, D which is pivoted to the pivot stirrup D which stirrup is pivoted concentrically with the axis of rotation of the drum. The stirrup may be moved, for example, by the control rod D which in turn is pivotedto the control lever D positioned adjacent the press A. It will be unpressure 7 is of vital. importance.

derstood that an operator standing at the press may advance or reel in on the reel C by drawing the upper end of the lever D to the right. Thus, a single operator may actuate the press and at the same time actuate the reel. The parts of 5 the reel do not of themselves form part of the present invention.

It will be understood that in the, use of the device a plurality of sheets of material E may be employed. Each suchsheet, for example of 10 leather, isbevelled on each end as at E E the bevels at opposite ends of each piece being preferably on opposite sides of the piece. In order to form the completed belt, and starting with one of the sections E, it may be laid in the po- 16,

sitioned, and then the bevelled face E of the adjacent piece is laid upon it and the two joined pieces are advanced to the press to be subjected to pressure. In the ordinary operation of the device the belt so formed is reeled in on the red and the operator, before and after each pressing operation, actuates the lever D to reel in the belt and draw the pieces into position in the press.

In practice I may employ sheets of celluloid as the adhesive. Whatever adhesive may be employed I find it advantageous to provide a sheet cut to about the right size for the lap joint between adjacent pieces of leather. The sheet material is normally inactive (not adhesive) and to render the same adhesive it is dipped or immersed into any suitable liquid or medium capable of rendering the sheet adhesive and it is then manually applied to the lap joint between the bevels E and E and the pieces so joined are then moved into the press to be pressed. In order to obtain a belt of uniform strength, uniformity in the applied adhesive and in the application of As an example of an advantageous adhesive I employ sheets of celluloid-of controlled size and thickness. I may for example use a sheet of celluloid 5/1000 of an inch thick. Such sheet, before use, is immersed in an acetone bath and the timing of the immersion is of vital importance. With a' sheet of celluloid .of the above thickness an immersion of four seconds is satisfactory, and I provide means for automatically and precisely timing the im- G is a housing G which may have a cover G2 and a base plate G The housing or casing is cut away as at G G indicates a bracket to which is pivoted a clipping lever G having an inner lever arm G The outer arm projects through the slot or aperture G3 and may terminate in any suitable clip including for example a fixed abutment G7 and an opposed leaf spring G adapted between them to grasp the adhesive sheet G G is any suitable knob for convenience in manual operation. The lever or dip arm G is normally held in the position in which it is shown in dotted line in Figure 4, as by the spring G When the operator wishes to employ the device he may manually clip or insert the adhesive sheet G and he then presses down on the knob G thrusting the device into the full line position, and thereby inserting the sheet G in the acetone bath present in the container G. When he so inserts the device the arm G extends the spring G and itself passes over the forward stop end H of the cam and stop lever H which is pivoted as at H on the bracket H and which is normally held in the full line position in which it is shown in Figure 4, as by the spring H As long as the parts are in the full line position of Figure 4 the sheet G is held beneath the surface of the acetone bath.

J indicates any suitable motor with a pinion J in mesh with the gear J which in turn rotates a pinion J in mesh with a second gear J which in turn controls the cam wheel J canying the cam projection J The wheel and cam projection are aligned with the cam portion H 35 of'the lever H. Normally this portion H engages the periphery of the wheel J which holds the stop member H in the full line position of Figure 4 and keeps the sheet G in the acetone bath. The actuating circuit for the motor J includes the lines J J 8 which circuit may be closed by any suitable switch J which in turn is actuated by a contact J engaged by an opposed adjustable contact J upon the arm J which is associated with the dip arm or lever G Thus,

when the operator depresses the knob G to po-' s'ition the sheet G within the liquid he at the same time closes the motor circuit and the motor, through the above described gear reduction, rotates the cam wheel J until the cam projection J engages the member H and flips the member 1-1 up past the portion G of the lever G. This permits the spring G to actuate and draw down on the lever G thus raising the lever G to the dotted line position and withdrawing the sheet G from the bath. This at the same time breaks the motor circuit and leaves the parts in position for the next cam excursion. J indicates an air recoil cylinder with a plunger therein associated with the shaft J which in turn is pivoted as at J to the lever G whereby the upward movement of the dip arm is cushioned. The air recoil cylinder is effective to prevent an unduly sudden withdrawal of the lever G and the sheet G from the bath. I thereby obtain a precisely timed immersion of the sheet G into the bath and the operator then withdraws the treated sheet from the clip and places it upon the lap joint between two adjacent belt pieces E. He then actuates the reel C in the earlier described manner, by employment of the lever D and positions the joint within the press.

Itwill be realizedthat whereas I have described and shown a practical and operative device, nevertheless many changes may be made 'in 'size, shape, num-ber and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specific showing. In particular I do not Wish to be limited to the employment of any specific adhesive or thickness of adhesive or to any specific bath as a variety of adhesives and a variety of baths may be employed. Also, the de tails of press, reel and supporting table may'be widely varied.

It will be understood that I do not herein claim the general method involved or the details of the press or mechanism other than the particular portion of the mechanism shown in Figures 3 and 4. The general method and control for the press have already been described and claimed in my Patent No. 1,943,409 which issued January 16, 1934, from the application for which the present material was cancelled out without prejudice.

I claim:

1. Means for treating adhesive and the like for use in a belt manufacturing mechanism, said means comprising a container adapted to receive a solution, means for positioning an adhesive sheet in said solution, and means adapted to withdraw said sheet from said solution at the termination of a predetermined period, whereby the sheet may immediately be used, including a manually operable holding member and timing means operable in response to movement of said holding member downwardly toward the solution.

2. Means for treating adhesive and the like for use in a belt manufacturing mechanism, said means comprising a container adapted to receive a solution, means for positioning an adhesive sheet in said solution, including a lever arm and means for securing the sheet thereto, and means for withdrawing said arm from said solution at the termination of a predetermined period, whereby the adhesive sheet may immediately be used, including a stop adapted normally to hold said lever arm in dipping position, and timing means adapted to withdraw said stop from operative position.

3. Means for treating adhesive and the like for use in a belt manufacturing mechanism, said means comprising a container adapted to receive a solution, means for positioning an adhesive sheet in said solution, including a lever arm and means for securing the sheet thereto, and means for withdrawing said arm from said solution at the termination of a predetermined period, whereby the adhesive sheet may immediately be used, including a stop adapted normally to hold said lever arm in dipping position, and timing means adapted to withdraw said stop from operative position, and yielding means adapted to urge said lever arm against said stop and adapted to move it out of the solution when said stop is removed.

4. Means for treating adhesive and the like for use in a belt manufacturing mechanism, said means comprising a container adapted to receive a solution, means for positioning an adhesive sheet in said solution, and means adapted to withdraw said sheet from said solution at the termination of a predetermined period, whereby the adhesive sheet may immediately be used, including an arm, means for securing said adhesive to the arm, means effective to hold the arm in dipping position, a motor, means for closing the circuit of said motor when the arm is 1,

'moved into dipping position, and means adapted,

in response to rotation of said motor, to cause said arm to lift from the solution.

5. For use with a belt manufacturing mechanism including a press and a support for supporting pieces to be joined into a belt, a container, said container beingadapted to receive a solution, means for positioning an adhesive sheet in said solution, means adapted to withdraw said sheet from said solution at the termination of a predetermined period, whereby the sheetmay anism including a press and a supportfor supporting pieces to be joined into a belt, a. container, said container being adapted to receive a solution, a lever arm mounted adjacent said container and solution, securing means associated with the lever arm, and adapted to secure an adhesive sheet in relation to said lever, manually operable means for depressing said lever arm to immerse said sheet within said solution, means normally effective to hold said lever arm in sheet immersing position after it has been manually so positioned, and means for causing the withdrawal of the lever arm and sheet from the solution at a predetermined period after their manual immersion into the solution.

CHARLES A. BALL.

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