US687438A - Oil-guard for sewing-machines. - Google Patents

Description

No. 687,438. Patented Nov. 26, I901.

12. c. RICHARDSON. OIL GUARD-FOR SEWING MACHINES.

(Applicafion filed Aug. 1, 1901.!

(No Model.)

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UNITED STATES PATENT OIL-GUARD FOR SEWlNG-MACHENES.

SPECIFICATION forming part of Letters Patent No. 687,488, dated Never-.1 er 26, 190i.

Application filed August 1, 1901. Serial No. 70,502. (No model.)

To Ml whom it may 001mm: 3 Be it known that I, CHARLES C. RICHARD- SON, a citlzen of the UnitedStates, residing at Worcester, in the county of Worcester and ing thrown off by the s'wift-ru nnin g wheel and spatt'ering upon the tables, work, or clothing of the operators, also to provide a protectingguard for the purpose specified having means for collecting the escaping oil and diverting the same to the interior of the arm or frame, where it can be deposited in the-usual drippan or in other suitable receptacle beneath the sewing-machine. These objects I attain by the mechanism illustrated in the drawings, wherein- Figure 1 represents an elevation view of the inner side of the balance-wheel having the flaring barrier-rim attached thereto. Fig. 2 is a longitudinal central section of mechanism embodying my invention. Fig. 3 is an end view, and Fig. & a side view, showing the collector or guard ring and its support separate from other parts. Fig. 5 is a back view, and Fig. 6 a side view, of the bell-shaped barrier-rim separate from other parts; and Fig. 7 illustrates a modification in the form of barrier-rim.

Myinvention consists in an oil-guard mechanism for sewing-machines comprising a liaring or bell-shaped barrier-rim tightly fixed in or upon the nave or hub at the inner end face of the balance-wheel and projecting therefrom to cover the joint and surround the end of the shaft-bearing where the operating-shaft is journaled in the arm or frame of the machine, and, combined with said flaring barrier-rim, a hollow-shaped annular guard or internallychambered collector-ring that surrounds the said rim and bearingand is disposed in a manner to receive the oil that is thrown or drips from the peripheral edge of said barrier-rim. The collector or guard ring is provided with a spout or tube at its lower part, leading therefrom through an opening in the sewing-machine arm and from which the oil can drip within the interior of the frame into the pan usually arranged beneath the machine.

Referring to the draw-i11gs,the part marked A represents a portion of the arm or upper frame of a sewing-machine of ordinary wellknown construction-as, for instance, a Singer manufacturers machine.

B indicates the balance and band wheel, having the hub mounted on the operating shaft C, which latter turns in the bearing a, formed as a projecting part of the frame A, all in well-known manner. The end of the hub runs adjacent to the end of the bearing.

D indicates a circular barrier or bell-shaped rim having its smaller end securely attached to the inner end of the band-wheel hub with a close or non-leakable joint. Said rim projects over the end of the bearing a without contact therewith, its lip e standing out some distance from the bearing. Said rim is preferably struck up by aid of dies from sheet metal and formed with a shoulder 3 and neck a, that is driven tightly onto or into a receiving-shoulder formed in or upon the hub of the wheel concentric with the axis.

F indicates the internally-chambered oilcollecting annulus or guard-ring, formed of sufficient internal diameter and breadth to surround and inclose the edge of the rim D and adapted to stand adjacent thereto, but without contact therewith at any part. Said ring F is supported in position between the frame A and wheel B in suitable manner for retaining it in concentric relation to the shaft and rim and normally stationary by connecting with the frame. in the present instance and preferably the sup port consists of a spring plate or arm G, connected to the ring and having its lower part secured to the frame at a convenient position below the line of the wheel B by a screw or bolt 71, as indicated in The guard-ring F is best formed of sheet metal,diedrawn into the required shape, with inwardly-turned lips on the edges, as shown. The diameter of opening through the front lip 5 of the ring F is greater than the diameter of the rim D; but the opening through the other lip 6 may be of less diameter than the end of the barrier-rim D, the better to prevent spattering toward the frame. At the lower part of the ring I arrange an inclined tube or spout I, leading to the interior of the frame A (see Fig. 2) through a hole therein. The collected oil can pass from the interior of the ringFand drip into the pan (not shown) beneath the sewing-machine or to any suitable receptacle into which the tube may be led. In the preferred arrangement of the parts the oil-hole m in the bearing a is covered by the ring F when at its normal position; but by reason of the spring action of the support G the ring can be pressed forward sufficiently to facilitate oiling in said hole m, and the ring returns to normal position when the pressure is relieved.

In some instances the rim D may be made, as shown in Fig. 7, with a curled-in lip e and provided with holes 72 for the delivery of the oil to the guard-ring in lieu of a straight lip, as e.

In the operation any oil escaping from the bearing end is caused to flow on the inner surface of the flared rim and to pass from the edge 6 thereof, Whether the Wheel is running or idle, into the annular chamber of the guard-ring F, and thence flows to the interior of the frame or arm A, so that no oil is spattered about the exterior or thrown from the machine to injure work and clothing.

These oil-guards can be applied to sewingmachines now in use Without altering the machines and at comparatively little cost and labor.

WVhatI claim as of myinvention, and desire to secure by Letters Patent, is-

1. An oil-guard mechanism for the purpose set forth, comprising a circular barrier-rim having a cylindrical attaching-neck, for its tight connection to the band-wheel, and revoluble with the band-wheel and shaft, a stationary, internally chambered annulus or guard-ring presenting an inwardly-open groove or channel, with inclosing lips, surrounding the outer edge of said barrier-rim adjacent to but not in contact therewith, a drip-tube leading from the channel of said guard-ring, and an arm attached to and adapted for supporting said guard-ring in connection With a sewing-machine frame.

2. The combination with the frame-arm having the projecting shaft-bearing, the 0perating-shaft, and the balance or band wheel in a sewing-machine; of the bell-shaped or fiarin g barrier-rim rigidly fixed to said wheel, and projecting from the hub, over the hearing concentric with the axis, an internallychanneled guard-ring surrounding the delivery edge of said barrier-rim, a tubular exit from the channel of said guard-ring leading into the interior of the arm, and a bracket or ear-plate supporting said guard-ring in connection with the frame.

3. The combination, with the machineframe having the projecting bearing with the oiling-hole therein, the operating-shaft rotatable in said bearing, and the wheel mounted on said shaft adjacent to the bearing; ofa barrier or deflecting rim carried on the end of the Wheel and extending over said bearing, an internally-chambered oil-collecting annulus surrounding said rim and bearing, and a yieldable resilient supporter attaching said annulus to the frame, and permitting resilient displacement thereof to afford access to the oiling-hole.

fitness my hand this 31st day of July, 1901.

CHARLES C. RICHARDSON.

Witnesses:

CHAS. II. BURLEIGH, CHARLES S. BACON.

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