US1308655A - Electrical heating device for watchmakers use - Google Patents

Description

B. E. BROWN.

ELECTRICAL HEATING DEVICE FOR WATCHMAKERS USE, APPLICATION FILED APR. 26. 1919.

1,308,655. I Patented Jul 1, 1919.

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Aztarewy BERTRAND EMEBY BROWN, '0]? HAVEN, CONNECTICUT.

ELECTRICAL HEATING DEVICE FOR WATCHMAKERS USE.

Specification of Letters Patent.

' Patented July 1, 1919.

Application filed Apri126, 1919. Serial No. 292,821.

To all whom it may concern:

Be it known that I, BERTRAND E. BROWN, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Electrical Heating Devices for Watchmakers Use; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in electrical heating apparatus designed especially for watchmakers use, in connection with the softening of the shellac in which the jewels are embedded, on.

balance wheels of watches, etc.

In watch cases tliere are small roller jewels set in hard shellac, and it frequently happens that the jewels become loosened, and it is necessary to replace the same and in the present practice it is necessary for the operator to heat the roller table and melt the shellac, necessitating the holding of a tool over an alcohol lamp to heat the same.

It is the object of the present invention to generally facilitate this work by the provision of a heating device which will be conveniently at hand and automatically thrown into operation by swinging the same to close the circuit, and in the provision of holders for receiving the roller table.

My invention consistsof various details of construction, which I have illustrated in the accompanying drawings, which with the letters of reference marked thereon, form a part of this application, and in which:

Figure 1 is a perspective view of the device shown as applied to the under surface of a jewelers bench. I

Fig. 2 is a side elevation of the device, and f Fig. 3 is a bottom plan view.

Reference now being had to the details of the drawings "by letter:

A designates a bench, and B an angled bracket member fastened to the under surface thereof and in which are two electrical terminals C and D connected respectively with the wires E and F, which in turn are adapted to be connected to the poles of a battery for supplying electrical current. Pivotally mounted upon said bracket member and insulated therefrom is a member H at one end of which are the resilient terminals I and K with electrical conductors N leading through said member and connected one to each of the jaws S which are secured to the outer swinging end of said member. Said jaws, it will be noted, have their inner edges tapering slightly and are beveled, and adapted to hold articles of different sizes to be heated. By tapering the inner edges said jaws are adapted to engage different sizes of balances.

In operation, when the device is to be used, it is thrown to the position shown in solid lines in Fig. 1 of the drawings, and the terminals upon the' member will contact with the terminals upon the bracket arm, so that when balance is placed in position with roller table touching both jaws, the circuit will be closed and the roller table wilLbecome quickly-heated. The balance is placed with the jewel up with the staff in the place between the inclined edges of the jaws, letting each beveled edge go beneath the roller table and touching the latter at points diametrically opposite. This will form an electrical connection between the jaws, and table will quickly become heated to sufiiciently soften the shellac so that the jewel may be tightly set or adjusted to any position, the hands of the operator being free for other 1purposes than holding the balance while eing heated.

What I claim to be new is:

1. An electrical heater for jewelers use for the adjusting of jewels on balance stafis,

consisting of a pivotal member, jaws at one end, and terminals at the other, with conductors connecting the same and suitably insulated from saidmember, stationary terminals against which said terminals upon the member are adapted to contact as the latter is swung into operative position.

2. An electrical heater for jewelers use for the adjusting of jewels on balance stafls, consisting of a pivotal member, a bracket upon which the same is mounted and insulated therefrom, said member having terminals at one end and jaws at the other, with electrical connections between each jaw and a terminal and insulated from said member, terminals upon said bracket against which the terminals upon the member are adapted to contact to close the circuit as the member is swung to operative position.

3. An electrical heater for jewelers use for the adjusting of jewels on balance stafis, consisting of a pivotal member, a bracket upon which the same is mounted and insulated therefrom, said member having terminals at one end and jaws at the other, with suitable insulated electrical connections between the same and the contact of the terminals, said jaws spaced apart with their inner edges slightly tapering, terminals upon said bracket member and electrical connections therewith.

In testimony whereof I hereunto afiix my signature.

BERTRAND EMERY BROWN.

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