US779382A - Spring-motor for sewing or other machines. - Google Patents

Description

No. 779,382. PATENTED JAN. 3, 1905.

' J. TEEL. SPRING MOTOR FOR SEWING OR OTHER MACHINES.

APPLIOATION FILED JULY 23.1903 RENEWED DBO. 1,1904.

2 SHEETS-BEER! l j/fi r Inventor Witnesses a (JO/U2 B I i Y \a I I l Attorney No. 779,382. PATENTED JAN. 3, 1905.

' J. TEEL. SPRING MOTOR FO SEWING OR OTHER MACHINES.

APPLIOATION FILED JULY 23.1903. RENEWED DEO.1.1904.

l W A a r; LIL,L;'\

2 SHEETS-SHEET 2,

Inventordo/mle/ UNITED STATES Patented January 3, 1905.

PATENT OFFICE.

JOHN TEEL, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO JOHNSON T. HEARE, OF WASHINGTON, DISTRICT OF COLUMBIA.

SPRING-MOTOR FOR SEWING OR OTHER MACHINES- SPECIFIGATION forming part of Letters Patent No. 779,382, dated January 3, 1905.

Application filed July 23, 1903. Renewed December 1, 1904. Serial No. 235,088.

To all whom it may concern): Be it known that I, J OHN TEEL, a citizen of the United States, residing at Washington, in the District of Columbia, have invented cer tain new and useful Improvements in Spring- Motors for Sewing or other Machines; and I do 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.

My invention is an improved spring-motor adapted for use in running sewing-machines and othermachines; and it consists in the peculiar construction and combination of devices hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation of a sewing-machine provided with my improved spring-motor. Fig.

- 2 is a sectional view taken on the plane indicated by line a a of Fig. 1. Fig. 3 is a similar view taken on the line b b of Fig. 1. Fig. 4 is a similar view taken on the line c of Fig. 1. Fig. 5 is a detail sectional view taken on the line (Z (Z of Fig. 1.

In the embodiment of my invention here shown Iprovide a pair of bracket-hangers 1, which are attached to the under side of the sewing-machine table, each of which brackets comprises a horizontal arm 2 and a vertical depending arm 3, the former being secured to the underside of the machine-table by screws, bolts, or other suitable devices and the latter being provided with a vertical slot 4.

The casing of my improved spring-motor comprises a pair of outer plates 5 6, which are preferably circular and provided on their upper and lower sides with lugs 7 8 and an intermediate plate 9. The outer plates 5 6 are secured together by appropriately-spaced bolt-rods 10, of which any suitable number may be used, four being here shown, and the intermediate plate is supported by bolt-rods 11,

which are here shown as disposed in line radially with the bolt-rods 10. The upper lugs 7 of the outer plates bear against the depending arms 3 of the hanger-brackets and are'secured thereto by bolts 12, which are adjustby spring-pressed pawls 17, with which the wheel is provided. Hence the said gearwheel 15 can rotate only in one direction on the shaft 13. The said shaft is further provided on the outer side of the gear-wheel 15 with a friction brake-wheel 18.

A shaft 19, which is the main shaft of my improved motor, is journaled in bearings at the centers of the plates 5, 6, and 9. A beveled gear-wheel is fast on the inner end of said shaft and is engaged by a beveled pinion 21, which is fast on a shaft 22, that is journaled in'a bearing 23, secured on the outer side of the plate 5. A crankshaft 24 is provided which may be attached to and unshipped from the shaft 22 at will to enable the latter to be turned manually in order to rotate the shaft 19. A spur-gear 29 is fast on the shaft 19 and engages the pinion 14 of shaft 13. A broad pinion 26 is also fast on the shaft 19 and is disposed between the spur-gear 29 and the plate 9. A plurality of springshafts 27 are orbitally arranged with reference to the shaft 19 and are suitably spaced therefrom and have their hearings in the plates 6 and 9. Each of the said spring-shafts 27 is provided with a spur-gear 28, which engages the broad pinion 26. Coil-springs 29, which correspond in number with the shafts 27, have their inner ends secured to the said shafts and. their outer ends secured to the tie-bolts 11, which secure the plate 9 to the plate 6.

It will be understood from the foregoing that by turning the shaft 20 in the appropriate direction on the crank-shaft 22 the springs 29 may be wound and that the reaction of the said springs causes the spur-gears 28 to revolve in one direction, and said spur-gears being in engagement with the broad pinion on the shaft 19 said shaft is hence turned by the power of the springs to cause the shaft 13 to rotate, the latter shaft being geared to the shaft 19 by the gears 29 14.

The fly-wheel or band-wheel 30 of the sewing-machine is carried by a stub-shaft, as is usual, and I provide a pinion 31, which rotates with the said band-wheel and is engaged by the spur-gear 15, as shown in Fig. 1. Hence the-power of the spring-motor may be communicated to the sewing-machine to operate the latter, as will be understood.

A shaft 32 has its bearings in the machinestandard 6 and in ahanger 33, which is bolted or otherwise suitably secured to the depending lug 8 of the plate 5. The said shaft has at its outer end an arm 34, which is provided with a brake-shoe 35, that bears on the periphery of the friction brake-wheel 18. A spring 36 (which is here shown as a coil-spring) on the shaft 32 keeps the brake-shoe in engagement with the brake-wheel, and its power is sufiicient to prevent the motor from running. At the inner end of the shaft 32 is a pedal 37. The operator places one foot on the pedal and by turning the shaft 32 against the tension of the spring 36 releases the friction-shoe from the wheel 19 to enable the motor to operate and to drive the machine at the desired rate of speed.

Within the scope of my invention I may dispense with the gears 20 21 and crankshaft 22 to wind the springs of the motor and substitute therefor a gear driven by the treadle of a sewing-machine, I do not limit myself in this particular.

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

1. In a spring-motor, the combination of a driven shaft, a counter-shaft geared thereto, a gear loose on the counter-shaft, a friction brake-wheel revoluble with the loose gear, a ratchet-wheel fast on the counter-shaft, a pawl carried by the loose gear and engaging the ratchet-wheel, a spring-actuated brake device normally engaging the brake-wheel, and means to release said brake device therefrom, substantially as described.

2. A motor having a revoluble shaft provided with a pinion, and means whereby it may be rotated, a plurality of shafts disposed orbitally with reference to the first-mentioned shaft and each having a gear engaging the pinion thereof, springs connected to said orbitally disposed shafts and simultaneously wound by the rotation thereof in one direction by the first-mentioned shaft, a countershaft geared to the first-mentioned shaft and driven thereby in one direction, a wheel loose on the counter-shaft, a pawl carried by said wheel, a ratchet-wheel fast to the countershaft and engaged by the pawl, and means to control the rotation of the loose wheel with the counter-shaft, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN TEEL. Witnesses:

J. C. WILLSON, L. WENTZELL.

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