US1161397A - Brush-holder. - Google Patents

Description

' wiknamo LEE. RdY LORD.

BRUSH HOLDER.

APPLICATION FILED AUG-20. 1914.

1,161,397. Patented Nov. 23, 1915.

2 SHEETS-SHEET l.

LEE ROY LORD.

BRUSH HOLDER.

APPLICATION FILED Auezo. 1914.

1 ,1 61 ,397. Patented Nov. 23, 1915.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT @FFIZQE.

LEE ROY LORD, OF DELAGUA, COLOR-ADO.

BRUSH-HOLDER.

Application filed August 20, 1914.

To all whom it may concern.

Be it known that I, Len It. Loni), a citizen of the United States, residing at Delagua, in the county of Las Animas and State of Colorado, have invented a new and useful Brush-Holder; and I do hereby 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.

This i vention relates to a holder for holding brushes of electric machinery.

An object of the invention is the provision of a holder of this nature constructed from a single piece of metal, such as sheet metal or the like, or in a casting and applicable to electric motors, dynamos, or other apparatus, in which the stationary brush or contact piece is held yieldingly upon moving conductor or commutator.

In practical fields the. details of construction may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view showing the application of the improved holder, holding a brush against a commutator. Fig. 2 is an end elevation. Fig. 3 is an enlarged detail perspective view of the holder and attending parts detached. Fig. 4 is a sectional view on line 4% of Fig. 3. Fig. 5 is a view showing the blank, which may be folded upon the scored lines, to form the holder. Fig. 6 is a view of the frame of the holder constructed as a casting.

Referring to the drawings, 1 designates the commutator, 2 the spindle thereof, 3 the bearing for the spindle, and 1 the spider plate, which is provided with the usual holder supporting bolts 5. The brush holder proper is in the form of a metallic frame, which may be either constructed as a casting, or from a blank having scored lines, on which the blank is folded or bent, to attain the desired construction.

The holder is provided with a pair of rolls 7 to engage or receive the bolt 5, there being set screws 8 to hold the holder in adjusted position. A guide trough 9 which comprises the overhanging flanges 10 is provided, for the reception of the carbon brush or the like 11. The flanges 10 are provided with bent lugs 12, and engaging the same Specification of Letters Patent.

Patented Nov. 23, 1915.

Serial No. 857,648.

is a cross plate 13, which has overturned lugs 1% to cooperate with the lugs 12 to prevent displacement of the plate 13. Projecting from the plate 13 is protrusion 15, in an eye of which one end of a coil steel spring is received. The other end of the spring 17 is connected to a loop 18, through which a screw 19 passes. Also mounted upon the bolt 5 by means of the rolled portion 20 is an arm 21, which is constructed of some. suitable rolled resistance metal. This arm 21 has a downwardly extending loop 22 formed therein, which bears against the upper end of the brush 11. The shank of the screw 19 engages the forked end 28 of the arm 21, and is provided with a nutQd, by the adjustment of w iich the loop of the arm 21 bears against the upper end of the carabon brush, and by virtue ofsaid spring, the brush is held yieldingly in contact with the commutator, or other movable or revoluble conductor. Connecting or engaging the slots 26 of the'flanges 10 are the bent ends 27 of the arched metal strap 28, which arches the coil spring, as shown clearly in the drawings. Connected to the carbon brush by means of a screw bolt 29 is a terminal plate 30, to which a lead or wire 31 is clamped, and which in turn is connected to a terminal plate 32 held in place by one of the set screws of the bolt 5. The arm :21 is movable in a slot 33 of the holder, thereby providing space to permit the adjustment of the arm.

In Fig. 5 a blank is provided having scored lines a, b, 0, (Z, 6 and f, upon which the blank may be folded to form the holder. In Fig. 6 the holder may be constructed in the form of a. casting. However, in this case the lugs 12 and 14: are omitted, and the plate 13 is made integral with the flanges 10, with the protrusion 15 extending from said integral plate or bar 13.

The invention having been set forth, what is claimed as new and useful is 1. A carbon holder comprising an angular shaped frame provided with a trough shaped guide for the reception of a carbon brush, said guide having flanges overlying the brush, a transverse plate connecting said flanges, an arm pivotally mounted upon a pivot support of the holder and bearing upon the upper portion of the brush, and yielding means connecting said plate and free end of said arm, said yielding means including an adjustable device for regulating the tension of the yielding means, and

a pivot support for the holder.

2. A brush holder comprising an angular frame constructed from a single piece of metal, a pivot support for the frame, said frame having a trough shaped guide for the reception of a carbon brush and provided with a slot, an arm mounted upon the pivot support movable in the slot and provided with means to engage the upper portion of the brush, said arm having a forked end, and adjustable yieldable connections between the guide and the forked end of the arm for yieldably holding the carbon brush against the commutator.

3. A brush holder comprising an angular frame constructed from a single sheet of sheet metal, a pivot support for the frame,

said frame having a trough shaped guide for the reception of a carbon brush and provided with a slot, an arm mounted upon the pivot support movable in the slot and provided with a downwardly extending loop bearing against the upper portion of a brush, said guide having flanges overlying the brush, a bar connecting said flanges, a spring connected to said bar, an adjustable device connecting said spring and the free end of said arm, and an arched protector arching over said spring.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LEE ROY LORD. \Vitnesses:

DONALD A. YOUNG, R. BEN VAUGHAN.

Copies of this Patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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