US1141287A - Floor-polisher. - Google Patents

Description

W. B. THAYER.

FLOOR POLISHER. APPLICATION FILED JAN.13. 1914. RENEWED MAR. 5, i915.

1 9 1%. %1L 'F. Patented June 1, 1915.

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IIVI/E/VTOR W. B. THAYER.

FLO0R POLISHER, APPLICATION FILED 1AN.13, I914. RENEWED MAR. 5, I915. v

Patented June 1, 1915.

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I/VI/E/VTOH mm? 5 754 y 4 I W ferred' form of which is against. j

\ moon-Penman.

Specification of Letters Patent.-

Patented June it, 1915..

Application filed. January 13, 1914 Serial No. 811,832. Renewed March 5,1915; Serial No. 12,412.

I T all whom it may concern Be it known that I, WILLIAIVL B. THAYER, a citizen of the United States, residing at Kansas City, in the county of J ackson and State of Missouri, have invented certain new and useful Improvements in Floor- Polishers; and I do declare the following to be a, full, clear, and exact description of the invention, su'ch as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying. drawings, and to the letters andfigures of reference markedtherewhich form a part of this specification. My invention relates to a floor polishing machine, and has for its principal object to I driven machine for polishor other provide a power ing or grinding a board, stone, floor, or I horizontal surface.

In accomplishing this object, I have provided improved details of structure the preillustrated'in the accompanying drawings, wherein:

Figure I is a perspective viewof afloor polishing machine constructed in accord ance with my invention. FigLII is an inverted perspective View of the polisher head,

v showing a number of grinding members .east metal,

nismfl FigL'IV is handle mounting.

ings (not shown),

monntedthereon. Fig. III is showing its mounting and adjusting mechaa detail perspective of the Fig. V is a similar view ofthe handle head, showing a wiring 'ar-I rangement.

Referring'more in detail to the parts: 1

designates a carrying member comprising a bodyil; which is preferably composed of in order to provide suflicient weight to hold the machine against vibration' whenthe parts are in operation, and which is' supported on casters 3 that are preferably provided with anti-friction beafrinorder that the body may be turned freely to project the polisher head to any desired position. I

The front endof the body 2 is concaved and provided with a base socket 4into which the lower end of a carrying head'f 5is promay be braced jected, so that the head against transverse strain, and mounted on 6 having forwardly shaft 9 is revolubly and-slidably mounted. Revolubly mounted on the shaft 9 and a vertical sectinn of a. portion ofthe polisher head shaft,

seated'on the lower collar 8 is'a bevel gear wheel 11 having a key l2gprojected into a feather groove 13 in the shaft9, so that the shaft may be revolved'from the gear wheel without nterfering with its vertical sliding travel, and meshing with the gear wheel 12 is a bevel gea'r wheel 14 that is fixed on the end of the drive shaft '15, which is journaled in a bearing 16 on" the bracket Gand has operative'connection with a motor 17 that is supported on the carrier body 2.

-The motor is preferably of an electrical type, and has feed wires 19that are preferably extendedfthrough a hollow handle 20, which ispreferably connected -,with the carrying body by. a yoke 21,,liavin end members 22 lyingflatagainst the si es of I members. 27 and incloses a switch box 28, where connection 1S made between the feed wires 19 and fixture Wires 29, and wherein the flow of current may be controlled between the'separate sets of wires by meansof a switch-30.

-Mounted on the lower endof the shaft 9 is ahead 32, preferablylof; cast metal, in order to provide weight or pressure for the polishers, and removably connected with the head, preferably by attaching the same theretov by lag' bolts 33 are polishers 34, one

- form of whi'chcomprises a bracket 35hava, base adapted to lie flat against the ing face of the head and receive the lag under bolts 83, and having grooves-36- in its oppo-.

site face for receiving the rails 37 of" a pollar type'of member here illustrated consistingof an emery stone, which is'"particularly high points .in a

or polishers may be slid. e

In actual use, I prefer toglue or otherwise seal the polishing members in their brackets, for

play therein the .vibration and jar' of the I ishing or grinding member 38; the particuhe bracket into which the stones facerof, the bracket into which the stones life the reason that if allowed any stones against the brackets would soon disintegrate the stones'.

I. also preferably ings, for the reason that with this arrangeejected to obviate clogging of the machine.

the-motor is connected with raised Without interfering with v current is turned into the. motor ment' I not only provide for variation in the grain and area of extent of initialcontact, but provide an open end channel therebetween, through which material removed from the floor and from the stones may be lVhile the head- 32 and the polishers pro vide sufficient weight, the weight may, in some instances, be greater than is advisable to employ and in order to relieve the pol isher of the undesirable weight, and also provide for lifting the head when the machine is being moved, I mount a lifting knob 41 on the top of the shaft by dropping a flange 4-2 from the bottom of the knob around the shaft and projecting pins 48 through the flange into an annular groove a l in the upper end of the shaft, so that when the knob is lifted the shaft may be its revoluble travel. The pins may be projected through apertures in the knob flange and then welded or otherwise permanently secured to the flange, and the parts of the pins that project into the shaft grooves are preferably provided with anti-friction rollers 46 to obviate friction on the shaft when it is raised while revolving.

In order to hold the polishing head off of the floor while the machine is being moved, I pivota post 47 on the upper bracket collar 8 so that it may lie fiat on the collar to allow the shaft to descend to operative position, or may be raised to engage the under side of the knob when the shaft is elevated and support the knob and shaft, so that the polisher head is held above the floor.

In using the machine, presuming the parts to be constructed and assembled as described, and presuming its use on amarble orlike floor,

a source of supply, usually a lighting fixture, so that when by manipulation of the switch in the handle of the machine, the polisher is revolved through the When the polisher is revolved, the stones carried thereby are revolved rapidly over the surface of the floor, and the latter polished or ground down toan even surface, the weight of-the cast metal head, supplemented by thatof the vertical shaft and the weight of the stones themselves, providing 'suflicient pressure to carry on the grinding process. When it is necessary to move the machine to a difierent point, or should a high point in the floor be encountered, the operator lifts the knob 41 to move the shaft 9 vertically in its bearings and through the bevel gear wheel 11, thereby raising the polisher head from thefloor. The machine may then be moved to the proper position and the polisher lowered perpendicularly to again contact the surace.

By having the front of the carrier body concaved, as illustrated, the polisher may be set in close to the body and thereby not only economize space, but facilitate the control of the polisher, and by mounting the handle on the carrier body by the pin and slot connection the handle is'made adjustable, so that control of the machine is facilitated; it being apparent that by properly locating the handle the body may be pivoted on the rear or forward carrying wheels, to lesson or increase pressure on the polisher head.

Having thus described my invention, what I claim'as new therein, and desire to secure by Letters-Patent, is

In a floor polishing machine, a supporting member comprising body and ground wheels, a body, means for actuating the polisher, and arhandle having yoke arms at its lower end overlying the side edges of the body member and provided with slots, and pins on said body member projected through said slots and anchoring the yoke arms to the body member.

2. In a floor polishing machine comprising a portable supporting member, having a socketed forward end, a bracket fixed to said supporting member within said socketed end, bearing members on said 'bracket,'a shaft revolubly mounted in saidbearing member, a. polishing head fixed on said shaft, a bevel gear feathered on said shaft and adapted for support on said bearing member, a second shaft revolubly mounted in said bracket at right angles to said first shaft, a bevel gear fixed to said second shaft and meshing with the bevel gear on said first shaft, a motor directly connected to said second, shaft, a knob having pin and slot connection with the upper end of said first shaft for raising said polishing head through said socket, a latch pivotally mounted on said bearing member and adapted for projection beneath said knob to hold said polishing head in elevated position, a tubular handle adjustably mounted on said supporting member, a hand grip on said handle, circuit wires in said tubular handle, and a switch in said hand grip for controlling current in said circuit wires.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM B. THAYER.

Witnesses:

LYNN A. RoBINsoN, L. E. CoATs.

polisher supported on said

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