US2022670A - Cementing machine - Google Patents

Description

Dec. 3, 1935. 1. KEITH CEMENTING MACHINE Filed June 27, 1953 Jim/ 217022 Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to certain improvements in connection with the cementing machine disclosed and claimed in my pending application, Serial No. 636,840, filed October 8th, 1932, in which a filler of suitable material, preferably soft rubber, is insertable in different positions and formations in the openings, or recesses between the cement applying faces of a horizontally disposed, vertically movable cementing grid, whereby certain portions of various parts of shoes may be heavily coated with cement, and other parts may be more lightly coated therewith by the same operation.

In many shoe factories the parts of shoe uppers which are required to be cemented are sent to the operator in different sizes of the same general shape and in comparatively small lots of the same size, but the lots of any particular size are likely to be sent to an operator for this operation at somewhat frequent intervals, so that a particular arrangement of the inserted filler must be used with more or less frequency. For this reason it is desirable to provide a construction or arrangement of the filler which may be rendered inoperative while a differently arranged filler is being used, and which may be made operative, when it is desired to use it again, more quickly than in the time required to reinsert it in the required position.

The object of my present invention is to provide a supplemental cement applying means for a cementing grid, of the character disclosed in my said pending application, which may be quickly moved to an inoperative position, so that it will not interfere with the use of a similar supplemental means arranged differently in the same grid, but which may be quickly restored to its operative position, so that there will be a substantial saving of time of the operator.

I accomplish this object by providing a filler which is of such form and resilience that, when forced into the openings or spaces between the cementing faces of the grid, it will be frictionally engaged by the sides of said openings with sufficient force to hold it in any position, to which it is adjusted, and which is adapted to be depressed below the level of the normal grid faces, so that it will be inoperative, and to be readily raised to the level of said faces, in which position it will be operative.

For a more complete disclosure of the invention, reference is made to the following specification, in connection with the accompanying drawing, in which:

Fig. 1 is a plan view of a form of cementing grid provided with an embodiment of my invention.

Fig. 2 is a sectional view at line 22 of Fig. 1. Fig. 3 is a detail sectional view, showing different adjustments. 5 Fig. 4 is a similar View illustrating a means of readjusting the filler strip.

Fig. 5 is a view illustrating the character of work which may be performed.

As in the construction of my said pending ap- 1 plication, I preferably employ a grid (1. of the McMurray type, illustrated in Patent 411,293,147, which comprises a series of flat parallel bars 1) having vertically disposed teeth I) the ends of which form cementing faces 0, which are ar- 15 ranged, when in use, in the same horizontal plane, or at the same level, the spaces between the teeth and the bars being preferably of approximately the same width.

According to my present invention a filling strip 20 (Z is provided, which is formed of soft, flexible rubber of suitable resiliency, as described in my said application, said strip being of slightly greater Width than the spaces between the fingers or bars, so that, when it is forced down into said 25 spaces, it will be somewhat compressed and will frictionally engage the surfaces of the grid with sufficient force to hold it in any position to which it may be adjusted when the grid is in use. The other transverse dimension of the strip 02 is 30 however made substantially less than the depth of the spaces between the finger, so that it may be forced down into the spaces between the fingers 1) until its top face is below the level of the faces a, as shown in Fig. 3. 35

In practice, for example, it is frequently necessary to apply a heavy coating of cement to the throat edge portion of vamp pieces shaped somewhat as shown by the piece a: in Fig. 5, but varying in size. Under ordinary conditions three dif- 40 ferent arrangements of supplemental cementing filler strips will be sufiicient for performing this work on an ordinary range of sizes, one formation being suitable for several sizes. Accord-- ingly, therefore, strips d, d, d may be arranged 45 somewhat concentrically, as shown in Fig. 1, in which position, the throat edge portion of a vamp piece may be pressed down on the strip d, so that a heavy coating of cement may be applied thereto, as indicated at y, and the cement may be ap- 5 plied in dots to adjacent portions, or to the entire surface, according to requirements.

If the intermediate strip (1 is to be employed in the same way, the strip at will be pressed down between the teeth of fingers of the grid, so that 55 its top side will bebelow the level of the faces a, as shown in Fig. 3 and it will thus be held in an inoperative position. If the strip d is to be used, both strips (1 and 11 will likewise be pushed down to an inoperative position, as indicated in Figs. 2 and 3.

Then, when strip at, for example, is to be used again, it will be restored to its former position. This may be quickly and conveniently done by holding a stiff flat plate, as 6, down on the tops of the fingers of the grid and lifting the strip up against the plate by means of a hook, as f, indicated in Fig. 4. A substantial amount of time is thus saved over that which would be required to reinsert the strip, if it had been removed.

It will be understood that the arrangements of the supplemental cementing strips, or fillers shown is merely illustrative and'that in practice the grid. area will usually be greater than that shown in proportion to the area occupied by the strips.

I claim:

In combination with a cementing grid having separated cementing faces disposed at a uniform horizontal level and having recesses therebetween, a filler adapted to be inserted in said recesses and to be frictionally engaged with the sides thereof, to hold the same in different positions vertically therein, said filler being of less thickness vertically than the depth of said re-

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