US20743A

US20743A - Brad-punch

Info

Publication number: US20743A
Authority: US
Publication date: 1858-06-29
Anticipated expiration: 1875-06-29

Description

.INO. THORNDIKE, OF NORTH \VEARE, NEW HAMPSHIRE.

BRAD-PUNCH.

Specification of Letters Patent No. 20,743, dated June 29, 1858.

T 0 all whom 225 may concern:

Be it known that I, JOHN THORNDIKE, of North Weare, in the county of Hillsboro and State of New Hampshire, have invented a new and useful Implement or Device for Driving Brads and which I term a Brad-Punch, and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the annexed drawings, making a part of this specification, in which- Figure 1, is a longitudinal vertical and central section of my improvement. Fig. 2, is a transverse section of ditto taken in the line m, m, Fig. 1. Fig. 3, is a longitudinal section of ditto taken in the line 1% 2/,

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to facilitate the driving of brads and consequently expedite the labor of sticking or attaching molding or beading to various articles of joinery, cabinet and similar work.

To enable those skilled in the art to make and use my invention I will proceed to describe its construction and the way in which it is used.

A, represents a cast metal cylinder, in which a rod B, is fitted and allowed to work freely therein, and C, is a smaller cylinder which communicates with one end of the larger one A, the cylinder C, having an internal diameter of sufficient capacity to receive a punch a, which is attached to the rod B, the punch being of such length that it will project a trifle beyond the cylinder C, when the rod B, is shoved into the cylinder A, to its fullest extent. The two cylinders A, C, may be cast in one piece and around the rod B, a spiral spring D, is placed, said spring being between the lower end of the cylinder and a boss 6, on the rod B, the spring D, having a tendency to keep the rod B, outward from the cylinder A, to its fullest extent and the punch a, within the cylinder A, and consequently out of the smaller cylinder C.

On the smaller cylinder 0, a box IE, is placed. This box is so arranged that one part 0, may slide off from the other (Z, the latter being cast with the cylinder C, or permanently attached to it, the part c, be ing the box portion or receptacle. This box IE, is of sufficient dimensions to receive the brads to be driven, the brads being placed one over the other, and kept in proper position by springs a, which are placed within the part c, and press the bra'ds against the part (Z. This will be understood by referring to Figs. 2 and 3. In the upper part of the cylinder C, an oblong slot 6, is made, said slot corresponding with the interior of the box E.

To the boss Z), a taper rod F, is attached. This rod when the rod B, is shoved into the cylinder A, passes through an opening f, in the lower end of cylinder A, and into the box IE, and bears against the plate d, the edge of which nearest the cylinder A, is made of taper form as shown at 9, Fig. 3.

To the under side of the smaller cylinder C, there is a support h, and a foot piece G, is attached to the elevated end of the cylinder. This foot piece is merely a rod having a screw thread on its upper end which is fitted in the under part of the cylinder, said rod having a circular base i.

The implement is used as follows: The box IE, is filled with brads, shown in red and designated by j, the box being filled by removing the part c, from (Z, and then replacing it. The brads j, are kept in proper position within the box E, by springs a, a. When the rod B, is shoved inward the punch a, will of course pass through the smaller cylinder C, and the taper rod F, will pass into the box E, and throw the lowermost brad j, out from underneath those above it into the cylinder C, and on top of the punch a, and when the punch a, is forced back into the cylinder A, by the spring D, the brad will drop into the cylinder G, directly in front of the punch which, as it is again shoved forward, will drive the brad into the work or through the molding. The rod B, may be driven or struck by a hammer or mallet and if a door or other piece of work that may be detached and laid on a bench is to have molding attached to it, the foot piece G, is placed on the work and adjusted by turning it so that the cylinder A, may be more or less inclined as occasion. may require. The support h, is placed against the molding as shown clearly in Fig. 1. In case wainscoting or other work that cannot be laid on a bench is to be molded, the implement is held in one hand and moved along while the rod B, is struck by a hammer or mallet in the other hand.

By this implement brads may be driven without defacing the molding and the work Will be greatly expedited. The implement may be cheaply constructed so that its cost compared With its value Will not be an object to a mechanic.

Having thus described my invention 7 what I claim as new and desire to secure by Letters Patent, is

The cylinders A, C, provided With the rod B, punch a, and rod F, the rod B, hav-