US461497A

US461497A - Frank

Info

Publication number: US461497A
Authority: US
Publication date: 1891-10-20
Anticipated expiration: 1908-10-20

Description

(No Model.) 1 H. DOBECK.

SHIELD FOR SEWING MACHINE GEAR.

N0. 461,497. Patented Oct. 20, 1891.

UNITED STATES PATENT OF ICE,

FRANK. H. DOBEOK, OF OMAHA, NEBRASKA, ASSIGNOR OF TlVO-TIIIRDS TO JAMES T. ROBINSON AND GEORGE E. STOKES, BOTH OF SAME PLACE.

SHIELD F OR SEWING-MACHINE GEAR.

SPECIFICATION forming part of Letters Patent No. 461,497, dated October 20, 1891.

Application filed March 3, 1891- Serial No. 383,541. (No model-) T0 at whom it may concern:

Be it known that I, FRANK. H. DoBEcK, a citizen of the United States, residing at Omaha, 1n the co,unty of Douglas, State of Nebraska, have invented certain new and useful Improvements in Shields for Sewing-Machine Gear; and I hereby declare thefollowing to be a full, clear, and exact description of the same, reference being had to theaccompanying drawings, in which Figure 1 is a perspective view of the operative parts of a sewing-machine with the shield in position. Fig. 2 is a similar View, the shield being turned back for the purpose of oiling, shipping the belt, or similar purposes. Fig. 3 is a detached perspective view of the shield.

Like symbols refer to like parts wherever they occur.

. My invention relates to the construction of shields for the gearing of sewing-machines, and is intended to protect the work from being soiled by oil from the bearings and to protect the bearings from lint, dust, the thread, 850.

In factories or work-shops where large numbers of machines are employed it is common to place them in a row upon a long table, allowing only sufficient space between machines to accommodate the operator, and to run all the machines from a common powershaft. The machines are necessarily placed close together to economize space, and the cloth will accumulate at the right of the operator, where it is liable to be soiled by contact with the oiled parts of the machine. Ow-

ing to this oiling or greasing of the fabric,-

there is a considerable loss to the manufacturer, which it is the object of my invention to prevent.

To this end my invention consists, generally stated, in a removable belt and pulleyshield adapted to inclose the oiled parts or bearings of the machine and guard the work from contact therewith while the machine is in operation.

There are other minor features of invention, all as will hereinafter more fully appear.

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains mayapply the same.

In the drawings, A indicates the machinearm; B, the fly-wheel; O, the pulley; D, the belt; E, the bobbin-winder, and F the emerywheel of any of the many well known forms of sewing-machines commonly used in factories. For the purposes of illustration a Singer type of machine has been selected as the one in most common use.

The shield is intended to sufficiently inclose the pulley, its bearings, and belt to protect the work from contact therewith, but not so as to prevent necessary access to the bobbin-winder and emery-wheel or the ready displacement of the shield when it becomes necessary to obtain access to the bearings for oiling and other purposes. To meet these requirements I prefer to construct the shield substantially as shown in the drawingsthat is to say, with arched or crown section 1,

which is extended downward and backward to form the belt-guard 2 and forward and downward, as at 3, to guard the bobbin-winder. The arched section 1 should be of sufficient width to cover the pulley and its bearings and extend beyond the fly-wheelB of the machine, but is cut away or slotted, as at 4, to allow the fly-wheel to project, and the beltguard 2 may'be narrower, if desired.

5 6 indicate the side pieces of the shield, of which the side piece 5 next to the arm of the machine will be cut away more orless, as at '7, to accommodate the shaft-bearing, while the outer side piece 6 may be continuous, if desired, but is preferably cut away, as at S, to allow ready access to the emery-wheel F. The edges 9 of the side pieces are preferably parallel with the inclined back edges 10, and the bottom edges 11 meet the edges 10 at an acute angle, the shield being hinged along the base of the belt-guard, as at 12, so that it can be readily turned back and away from the machine, as shown in Fig. 2, for oiling the bearing, shipping the belt, or for any other purpose.

WVith the shield it is preferred to use abase to which the'shield is hinged,'instead of securing it directly to the table. This base may consist of a plate 13, slotted, as at 14, for the passage of the belt, provided at its rear with knuckles 15 for the pintle of the hinge and at its front with a triangular box 16, which forms a front guard for the belt and also closes the bottom of the shield proper, as shown in Fig. 1. 17 indicates holes for screws by means of which the base-plate 13 may be secured to the table to prevent its accidental displacement.

It is evident that the shield will preferably be made of cast or sheet metal and its baseplate of cast metal; but I do not intend to limit the invention to any particular material for either, as any suitable material may be used in the construction, such as wood ven eer, papier-mach, or the like.

Among the advantages of my invention are the perfect protection afforded the work from the oil and grease of the bearings and the protection afforded the bearings from the dust and lint of the work and shop, so that loss on the work is avoided'as well as delay and hinderance due to frequent cleaning and oiling the bearings of the machine.

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

1. A shield for the gearot sewing-machines, said shield having a crown or arch 1 and down wardly-extending belt-guard 2, said beltguard adapted to support the crown from the table of the machine, substantially as and for the purposes described.

2. A shield for the gear of scwing-machin es, said shield having a crown 1, a down wardlyextending belt-guard 2, adapted to support the crown from the table of the machine, and side pieces 5 and 6, substantially as and for the purposes described.

3. The combination, with a shield for sewing-machine gear, said shield having a crown and rearwardly-extending belt-guard, of a base-piece slotted for the passage of the belt, and a hinge connection between the shield and base-piece, substantially as and for the purposes specified.

at. The combination, with a se\ving-1nacl1in(- gear shield, said shield having a crown, a rearwardly-extending belt-guard, and side pieces,

of a slotted base-plate having at its front a front belt'guard,which closes the sides of the shield, substantially as and for the purposes specified.

In testimony whereof I atfix my signature, in presence of two witnesses, this 26th day of February, 1891.

FRANK. H. DOBECK.

\Vitnesses:

W. N. WILLIAMs, A. W. Donn.