US278683A

US278683A - chubch

Info

Publication number: US278683A
Authority: US
Publication date: 1883-06-05
Anticipated expiration: 1900-06-05

Description

(No Model.)

L. J. CHURCH.

PAN ATTACHMENT FOR SEWING MACHINES.

Patented June 5, 1883.

N. PETERS. mo-ufiwgnphen Washington. D. c.

UNITED STATES PATE T FFICEO- LOUIS J. CHURCH, OF WASHINGTON, DISTRICT OF COLUMBIA.

FAN ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 278,683, dated June 5, 1883.

Application filed Apr-i127. 1883. (No model.)

To all whom it may concern v Be it known that I, LOUIS J,- CHURCH, a citizen of the United States, residing at NVashington, in the District of Columbia, have invented v certain new and useful Improvements in Fans for Sewing-Machines and the Like; and I do declare the following to be a full, clear, and

to the letters and figures of reference marked I thereon, which form a part of this specification.

This invention relates tofans for sewing-ma chines and the like; and its object is to provide a device possessing superior advantages in point-of simplicity, inexpensiveness, durability, and general etliciency;

In the drawings, Figure 1 is a perspective view of my improved sewing machine fan. Fig. '2 is a vertical longitudinal sectional view of the same. Fig. 3 is a vertical detail secti onal view taken through the fan-socket. Fig. 4 is a horizontal sectional "iew on the line m m, Fig. 2.

Referring to the drawings, A designates the cylindrical tubular body of the device, which is provided at its bottom with two lateral flanges, B C, arranged one above the other. These flanges are arranged-to receive the edge of the table on which the device is secured between them, and in the under flange, C, is formed a screw-threaded perforation, D, through which works a set-screw, E, by which the device can be clamped in position on the table.

F is an arm or extension, that projects from the lower end of the tubular body A, and is arranged, preferably, diametrically opposite the flanges B C. To the end of this arm' F is fulcrumed, as at G, a lever, H, which projects forwardly under the body A, and has an operating-chain, I,-connected with its free end,

the other end of the said chain being secured to the treadle of the machine, (not shown,) so that the lever H will be operated by the movement of the treadle.

J is a piston, that has its lower end, K, working through a perforation, L, in the bottom of the tubular body A, while the head M of the piston works in the said body against the tension of a coiled spring, N, that is arranged around the piston J. The latter is connected by a chain, 0, at its bottom end with the lever H, so that as thelever is drawn downwardly by movement of the treadle the piston J follows it, and thus causes its head M to compress the spring N against the bottom P of the tube A. As soon as the lever H is released the spring N forces the mechanism back to its normal position. transmitted to the rock-arm Q, that carries the fan by means of a connecting-rod, R, which is pivoted to a lug or projection, S, that is arranged on the head M, and works through a longitudinally-disposed slot, T, in the tube A, the other end, U, of the rod R being adjustable in any one of a series of perforations, V, in an arm or extension, V, of the arm Q. The main portion of the rock-arm Q consists of a plate that is pivoted, as shown at X, to the top of the tubular body A. p

Y is a fan-soeket, that is secured to the plate Q. This socket consists of a curved portion, Z, arranged to receive the handle of the fan, which latter is shown in dotted lines, and'a flange, A", in which is formed a perforation,

B through which passes a-set-screw, C that This movement of the piston is works through a screw-threaded-perforation,

D", in the plate Q, and clamps the fan-socket to the latter, as shown. The fan-socket can be turned on this screw C as on a pivot to regulate the normal inclination of the fan in relation to the body A.

The body or stem A of the device is preferably formed of a central cylinder, E, of sheet metal, that is secured at its ends against annular shoulders F G respectively, on top and bottom castings, H 1

The advantages and operation of my invention are obvious. The device is very simple and efficient, and is adapted for use in various places. It can be operated by movement of the treadle, or by any other suitable means, and numerous modifications in the construction and arrangement of parts to adapt it for different places and different means of operation can be made without departing from the thereof, a piston working in the body andconnected with the lever, and a rock-arm adapted to carry the fan, and arranged at one end of the body and connected with the piston, as set forth.

2. The combination of a cylindrical stem or body having a lateral arm at its lower end, an operating-lever fulcrumed to the said arm, a piston working in the cylinder and connected with the said lever and having a projection from its head working through a slot in the cylinder, a coiled spring acting on the head of the piston to return the same, a rock-arm pivotedto the top of the cylinder, and a connecting-rod extending from the rock-armto the projection 011 the head of the piston, as set forth.

3-. The combination of a cylindrical body having a-longitudinally-disposed slot, lateral flanges by which it can be secured in position,

and a projecting arm at its bottom, an operating-lever fulcrumed on the said arm and extending under the cylinder, a coiled spring arranged in the latter, a piston working against the coiled spring, a chain connecting the piston with the lever, a rock-arm pivoted to the top of the cylinder and carrying a fan-socket, and a connecting-rod pivotally connected with the rock-arm and piston-head, as set forth;

4. A fan motor comprising a cylindrical body arranged to be secured to a sewing-machine or other table, and provided with a rearwardly-projecting arm at its lower end, a lever fulcrumed to the said arm and extending under the cylinder, and adapted to be connected to the treadle ofthe machine, a spring arranged in the cylinder, and a piston working against the spring and connected to the operating-lever, as set forth.

5. The combination of a cylindrical body, a

piston working therein, a rock-plate pivoted'4o to the cylinder and carrying a fan-socket, and having an arm or extension, and a connectingrod pivotally connected to the said arm and to the piston, as set forth.

6. The combination, with the rock-arm, of

a socket comprising a curved fan-holding portion and a securing-flange, and secured to the rockarm by a single set-screw, so that it can turn 011 the same as on a pivot, to regulate its angle of inclination,- as set forth.

In testimony whereofI affix my signature in presence of two witnesses.

LOUIS JOSEPH CHURCH. \Vitncsses J. REED LITTEL'L, H. J. ENNIS.