US15045A - Revolving last-holder - Google Patents

Description

REVOLVING LAST-HOLDER.

Specicaton of Letters Patent No. 15,045, dated June 3, 1856.

To all whom t may concern:

Be it known that I, JosIAH MUMFORD, of Clarksburg, in the county of Ross and State of Ohio, have invented certain new and useful Improvements in the Construction of Revolving Last-Holders; and I do hereby declare that the following is a full, clear, and eXact description thereof, reference being had to the accompanying drawings, making a part thereof, in which- Figure l, represents a front view of said last holder, Fig. 2, represents a top view of the same. Fig. 3, represents a vertical cross section through the center of the machine. Fig. 4, a front view of the revolving plate to which the arms of the last holder are attached.

The nature of my invention relates to an arrangement in last holders in which the two last holding arms are attached to a revolving center plate in such a manner that when one last is turned upward the other be turned downward, and vice versa.

T o enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.

A represents the frame of the machine consisting of a substantial table or bench; this table supports the center shaft B, of the machine, as shown in Fig. 8, which bears on its end O, the revolving plate C, fastened to it by means of screw and nut, or otherwise. The shape of this plate can be more particularly understood by reference to the drawings, it is provided with two inclined planes to which are fastened by means of screw bolts the two arms D holding a last each; by this arrangement the two arms stand in an oblique position toward each other which is necessary, for the purpose of giving to each arm and last a free movement, and not being obstructed by the movements of the other last. As shown in Fig. l, the two arms are attached to the revolving plate C in a reversed position, and the screw bolts a pass through slots b which give the means to adjust the position of the arms at the option of the operator. The arms D are bent at one end and support at these ends horizontal braces E to which the lasts are fastened; each brace is fastened to its arms by means of a screw bolt Z so that it can be turned freely in a horizontal plane on said bolt. The standards F and G are attached to the braces E by means of screw bolts m; these screw bolts also pass through slots n, in the braces E and their distance from each other as well as their position can thus be changed at the option of the operator to accommodate them to any sized lasts. The standard F holds the rear part of the last by means of a screw bolt, or other contrivance. The standard Gr bears down on the front part of the last by means of a head piece H fitting the shape of the last; the head piece H, is adjustable in the body of the standard Gr by means of a rack f, and a pawl g, and can thus be pressed tightly to the front part of the last, securing the latter firmly.

By means of these arrangements the operator is enabled to bring the lasts M and N into any desired position, for in the rst place he can turn the revolving plate C, and with it the arms D on the shaft O; and he can turn the braces E on their respective bolts. The objects of the lasts being attached in a reversed position is, that by this arrangement the operator is enabled to finish the work of a certain description on two shoes, without changing his implements. For instance when he has finished the heel on one shoe he has only to turn the arms D upside down, which brings the unfinished shoe into the place of the finished one, and permits him to nish the heel of the other, without loss of time change of tools or material thus saving time and labor, and affording the means of furnishing a cheaper article than heretofore. The revolving plate C can be kept steady by means of a cam lever P, which is supported at its fulcrum by lugs R attached to the bench A; the cam Q can be inserted into the notches in the circumference of the revolving plate C and thus the latter can be kept steady in any adjustable position.

Another important feature in my invention is this that it can be changed from a right to a left hand machine or vice versa to suit the convenience of the user. rlhe conveX form of the plate C with its slots it, t, Fig. 4t, admits of moving the last holders from each other in the arc of a circle, and thus give the operator abundant room, without unnecessary extending the said holders to work upon any sized shoes.

Having thus fully described the nature of my invention, I would state that, I am aware, a revolving last holder has been patentecl. This I do not claim. Nor do I claim arranging two revolving arms on one standard, as this has been done. But

l/Vhat I Clo claim as new, and desire to seeure by Letters Patent, is-

The so arranging of the two arms carrying each a last, to one revolving plate, having two inclined planes upon it as that both arms shall revolve at once, and when the last on one shall be up, the other shall be down, 10 and vice versa, for the purpose, of bringing one last into convenient position for the operator, and removing the other one entirely out of his way, and in the manner set forth.

JOSIAH MUMFORD. Witnesses:

A. B. STOUGHTON, THos. H. UPPERMAN.

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