US317624A - canfield - Google Patents

Description

(No Model.) 2 Sheets-Sheet- 1.

I. A. GANFIELD. APPARATUS FOR THE MANUFACTURE OF ARMPIT DRESS SHIELDS.

No. 317,624. Patented May 12, 1885.

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APPARATUS FOR THE MANUFACTURE OF ARMPIT DRESS SHIELDS. No; 317,624. Patented May 12, 1885.

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N. PETERS. Phclo-Liflwgnhher. Wilhing om 0.1;

, UNITED STATES i PATENT OFFICE.

ISAAC A. CANFIELD, OF MI DDLETOVVN, CONNECTICUT, ASSIGNOR TO THE CANFIELD RUBBER COMPANY, OF SAME PLACE.

OF ARM PIT DRESS-SHIELDS.

SPECIFICATION forming part of Letters Patent No. 317,624, dated May 12, 1885.

Application filed July 18, 18851. (No model.) Patented in England May 26, 1831, No. 1,307.

To aZZ whom it may concern:

Be itknown that I, ISAAC A. CANFIELD, of Middletown, in the county of Middlesex and State of Connecticut, have invented a certain new and useful Improvement in the Manufacture of Armpit Dress-Shields, of which the following is a description, reference being bad to the accompanying drawings, where Figure 1 is a view of my improved dressshield, the product of my apparatus and process. Fig. 2 is an elevation of my improved dies and heater-box made use of and of the mechanism for operating the same. The heatguard box is not shown in this figure. Fig. 3 is a view of the dies, the heater-box, and the heat-guard box in vertical transverse section. Fig. 4 is a view of the former made use of. Fig. 5 is a view of a piece of material used to form the shields for the purpose of showing the relative position of the component layers. Fig. 6 is a view of the heatguard box inclosing the heater.

This invention is an improvement in the manufacture of class of devices known as dress shields, and intended to be worn under the arm by both men and women, to serve the double purpose of protecting the clothing from perspiration and protecting the person from irritation.

The process: The stock for making these dress-shields consists of a central layer of thin rubber containing enough sulphur and lead to permit subsequent vulcanization, faced upon both sides with a textile orother suitable fabric. For these outside layers the article known to the trade as stockinet is preferably used; but it is obvious that a knitted "fabric, a felted fabric, or possibly a paper fabric would answer, and there may be other fabrics suited to the purpose. The outer layers of cloth or the like are caused to adhere to the central layer of rubber by heat and pressure. The stock, when the component layers are thus arranged, consists of a waterproof material suitably faced upon both sides with a textile or other fabric. Such facings act as an absorbent of the perspiration instead of shedding it. The stock thus constituted is cut by hand or otherwise, preferably by a suitable press, into pieces of a size suitable to j by a rod,

the production of these dress-shields. These pieces are then laid upon and across the top of the female die, and the male die, worked by any suitable power and apparatus, moves downward into the female die, doubling the stock before it, and finally forming it between the concave and convex spaces of the dies. \Vhen the male die reaches the lower limit of this play, it is allowed to remain there two or three minutes in order to give set to the stock; then the male die moves up and. out of the female die, and the operator removes the stock, now doubled upon itself and curved at the doubling-point. These pieces are then taken and placed in the formers, and are then laid in an oven and subjected to a dry vulcanization,(heat 260,) which gives the curve of the blank a permanent set. The blank is then taken from this former and placed upon another former, and is then cut and trimmed to the required shape, after which the edge may be bound or scalloped. The shields are without a seam at the apex when bent to the proper shape for use. After being stamped with proper numbers or letters to indicate their size, the goods are then ready for use.

The machine: The letter a denotes a male die having a concave face, a, and the letter 7) denotes the corresponding female die as a whole having a narrow and deep matrix or mortise, b, at the bottom of which is the convex working-face 1), corresponding to the concavity of the working-face of the male die. The female die is set or fastened into the mortise made in the heater-box 0, which isintended to contain steam, hot water, or any other suitable heating medium, thereby giving heat to the dies, which it is possible to use cold, but

which work better when suitably heated. The

male die is hung to the barf, which has vertical reciprocation by means of the arm h, pivoted at the far end and connected to the treadle Both dies are usually made of steel. Steam enters the heater-box through preferablyof asbestus, and it may or may not inclose the whole of the heater. Its purpose is to prevent radiation of heat from the heater, and to form a rest for the operators hands in submitting stock to the action of the dies. This guard-box, while it prevents the workman from burning his hands, is particularly useful in retaining the heat in and around the heater-box c and the female die located on the heater-box. In a shop where a number of these machines are in operation, if the heater-boxes are left uncovered or unprotected, the escap ing heat soon renders the temperature of the room unbearable. By employing the guardboxes the heat is retained around the dies, and consequently the time required to give the proper set to the article is considerably lessened.

The letters at m denote checks rising from theheater-box, which dispense with the neces sity of having the male die descend into the heater-box to the distance liable to cause the stock to unduly stretch. These cheeks extend up a considerable distance along the sides of the male die when the latter is forced into the guard-box, and consequently the whole shield is heated and partly vulcanized.

The letter Z denotes a former used in con nection with these dies. It is made of vulcanized iron plate or the like, simi'larin shape to the male die, and has a suitable number of pins on periphery, upon which the stock is impaled before it is submit-ted to the process of vulcanization.

I make no claim in this application to the process and article herein described, as they form the subject-matter of separate applications, numbered, respectively, 155,202 and 155,206.

I claim as new- 1. In a machine for manufacturing armpit dressshields, the combination, with a guardbox having anopening in its upper face anda heater-box located within said guard-box, of a female die located within the guard-box and on the heater-box, and a vertically-n1ovable die, substantially as set forth.

2. In a machine for manufacturing armpit dressshields, the combination, with a guardbox and a heater-box, of a female die located within the guard-box, (and provided with upwardly-projecting side cheeks,) and a movable die, substantially as set forth.

ISAAC A. OANFIELD.

XV i tnesses:

FREDERICK SMITH, RATCLIFFE HICKS.

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