US1150155A - Wood-polishing machine. - Google Patents

Description

W. I. SUMNER. WOOD POLISHING MACHINE. APPLICATION FILED NOV. 17. I914.

1,150,155. Patented Aug. 17', 1915.

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W. J. SUMNER.

WOOD POLISHING MACHINE. APPLICATION HLED Nov 11,1914.

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WOOD POLISHING MACHINE.

APPLICATION FILED NOVDII. 1914.

1,150,155. I Patented Aug. 17, 1915.

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Specification of Letters Patent. Patented Aug, 17 1915.

Application filed November 17, 1914. Serial N 0. 872,632.

To all whom it may concern:

Be it known that I, VVALTERJ. SUMNER, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented newaand useful Improvements in Wood Polishing Machines, of which the following is a speciiication.

to produce a machine 0f.the characterre ferred to which is particularly designed for polishing or finishing work or stock having an irregular or undulatory surface, the machine of this invention embodying a plurality of endless polishing belts which run over shaper blocks any number of which may be interchangeably used in the machine thus adapting a plurality of shaper blocks to be employed for different kinds of work depending on the surface to be polished.

A further object of theinvention is to provide in a machine of the class referredto a work -holder which is universally.

mounted so that it maybe moved laterally or in a fore and aft direction andbrought to any point whatever with respect to the polishing belts, means being provided for vertically adjusting the work holder andv also for feeding said holder and the work carried thereby in relation to the polishing belts. 1

l/Vith the above and other ob ects in view, the invention consists in the novel construction, combination and arrangement of parts,

as herein described, illustrated and claimed.

In the accompanying drawings:Figure of the supporting carriage therefor, taken Fig. 7 1s a detail 1 on a still larger scale. 7 horizontal section on the line 77 of Fig.

1. Fig. S-is a fragmentary vertical section F ig." 9 is a fragmentary sectional view showing one of the shaper blocks and portionsof one showing one of thebelt 'tighteners.

of the polishing belts and head frame.

Referring to the drawings A'generally designates the. machine frame which maybe of any desired size and shape to support the operative parts hereinafter particularly described. At a suitable elevation, oppositely arranged paralleltrack rails 1 are arranged just within the side members of the frame A and rendered vertically adjustable by meansof a pair of threaded adjusting shafts 2 thelower ends of which are stepped in p I bearings 3 on the frame A and the upper This invention relates to wood pollsh ng machines, the object of the invention belng endsof which are also journaled in bearings 4 andprovided at their upper extremities vided at one end with an operating crank handle 9 enabling both of the adjusting I screws or shafts 2 to be'simultaneously and equally turned for the purpose of raising and lowering the track rails 1. These track 7 rails, are steadied by means of guides 10 on the frame A as shown in Fig. Q.

Mounted upon the track rails 1 is a carriage 11 the same being provided with wheels or rollers 12' adapted to travel along the track rails'l, said track rails extending in a fore and aft direction or from the front, to the rear of themachine. 'Mounted upon thecarriage 11 is a work holder 13which is illustrated in detail in Figs. 5 and 6, said work holder comprising a suitable marginal 4 frame, to which the reference numeral 13 is applied, and a tableltsupportediby said frame. iAdjacent to. the opposite sides of the frame ofv the work holder, the latter is provided with shafts 15;and 16 parallel-to each other, eachlof whichis provided adja-= cent to 'its opposite. extremities with spur gears 17.which engage the teeth of parallel. racks 18 on the upper surface of the carriage 11, the racks 18' extending in a direct1on perpendicular or at right angles tothe movement of the carriage 11 on the track rails '1. The shaft 15 is provided at one extremity with a crank handle 19 enabling one ofsaid shafts tobe revolved for the purpose I of feeding the work holder 13 transversely of the machine and acrossthe carriage 11.

,On its upper side the work holder is provided with'clamps 20 and 21 one of which isv made adjustable as shown in Fig. 5 by providing the table 14: with slots 22 extending transversely thereof and receiving clampingbolts 23. By loosening these bolts, the clamp 21ymay be moved toward and. away from the clamp 20 so as toaccoms modate workof different, sizes and enable the same to be securely fastened to the Work holder. The work holder may be readilyproviding the head frame with vertical grooves 27 as best illustrated in Figs. 1 and 7, the grooves 27 being adapted to receive vertical ribs 28 on a pair of guides 29 which are shown as fastened to the frame'A by means of screws or their equivalent.

To the lower end and inner face of each of the sidebars 21 of the head frame B is secured a shaper block 31 having a rounded lower end as shown in Fig. 1. This block, as shown in Fig. 9, is detachably secured to the adjacent side bar 24: of the head frame B'by means of fasteners 32 so that interchangeable shaper blocks of different sizes and shapes may be employed according to the nature of the surface being; operated upon. At the upper end of the head frame B are pulleys 33 which as shownin Figs. 1 and 8 are adjustable for the purpose of tightening the respective endless polishing belt C. To that end the adjacent side bar 2% is provided with a vertical slot 34; in which is a slidable bearing 35 for the shaft 36 of the said pulley 33. An adjusting screw 37 has a swiveled connection at 38 with the slidable bearing 35 and a threaded connection at 39 with the frame bar 24. Therefore, by turning the screw 37, the pulley 33 may be adjusted for the purpose of taking up slack in the endless polishing belt. C.

.Each of the endless polishing belts G, two

of such belts being shown, after passing around the pulley 33 and the shaper block 31, passes over pulleys 40 and 41 journaled' on stud shafts 42' supported by the machine frame A. Each belt then passes around one of a pair of driving pulleys 13 on driving shafts 14 arranged at opposite sides of the" machine and each equipped with a driving pulley 4:5 and an. idler pulley 46 either of which is adapted to receive an independent driving belt a7. In connection with each belt 47 I employ a belt shifter 4-8 so that either one of the endless polishing belts may be thrown into or out of operation. They may be driven individually or collectively according to the nature of the work per polishing belts against the work with any desired pressure, said handles also enabling the operator to lift the polishing belts quickly off the work before and after the polishing operation.

As shown in Fig. 2 the machine hereinabove described may be made quite narrow and compact, the work holder 13 being movable beneath tlie'polishing belts and from one to the other as may be required. In one and the same machine, a plurality of shaper blocks 31 may be used simultaneously thereby enabling a portion of the work to be performed by one belt and another portion by another belt. By reason of the construction set forth shaper blocks of different sizes I and shapes may be used according to the irregular or undulatory character of the surface being polished. In case of extra large work, the work holder 13 may be lifted off the carriage 11 and the work or stock may be placed directly on said carriage. The supporting track rails 1 may be adjusted up and down to accommodate Work of any size or thickness.

WVhatI claim is 1. In a polishing machine, the combination of a machine frame, a horizontally movable work holder, vertically adjustable sup porting and guiding means for said work holder, a vertically movable polishing head frame located wholly above said table, a handle rigidly fastened to said head frame for manually sliding the latter up and down, guides on the machine frame for said head frame, a plurality of endless polishing belts, pulleys on saidhead frame around which said belts pass, driving pulleys for said belts on the machine frame, and counterbalancing means for said head frame.

"2. In a polishing machine, the eombina tion of a machine frame, a horizontally movable work holder, vertically adjustable supporting and guiding means for said work holder, a vertically movable polishing head frame, guides on the machine frame for said head frame located wholly above said table, a handle rigidly fastened to said head frame for manually sliding the latterup and down, a plurality of endless polishing'belts, pulleys on said head frame around which said belts pass, driving pulleys for said belts on the machine frame means for throwing one or more of said belts into and out of operation, and counterbalancing means for said head frame.

3. In a'polishing machine, the combination of a machine frame, a horizontally movable work holder, vertically adjustable supporting and guiding means for said work holder, a vertically movable polishing head frame, guides on the machine frame for said head frame located wholly above said table, a handle rigidly fastened to said head frame for manually sliding the latter upand down,

I a plurality of endless polishing belts, pulpolishing head frame located Wholly above formanually sliding the latter up and down,

guides on the machine frame for said head frame, aplurality of endless polishing belts, pulleys and shaper blocks on said head frame around Which said belts pass, driving pulleys for said belts on the machine frame, and counterbalancing means for said head frame. V i

5. In a polishing machine, the combination of a machine frame, a horizontally movable carriage, a horizontally movable Work holder shiftable at a right angle to the movement of the carriage, vertically adjustable supporting and guiding means for said Work holder, rack and pinion mechanism for shiftingsaid Work holder, a vertically movable said table, a handle rigidly fastened to said head frame for manually sliding the latter up and doWn, guides on the machine frame for said head frame, a plurality of endless polishing belts, pulleys on said vhead frame around Which said belts pass, and driving pulleys for said belts on the machine frame.

6. In a polishing machine, the combination of a machine frame, a horizontally movable carriage, a horizontally movable Work holder supported by said carriage and shiftable in a plane perpendicular to the carriage, vertically adjustable supporting and guiding means for said carriage and Work holder, a vertically movable polishing head frame located Wholly above said table, a handle rigidly fastened to said head frame for manually sliding the latter up and down, guides on the machine frame for said head frame, a plurality ofendless polishing belts,

pulleys on said head frame around Which a said belts pass, driving pulleys for said belts on the machine frame, and counterbalancing 7 means for said head frame.

In testimony whereof I affix my signature in presence of tWo Witnesses.

' WALTER J. SUMNER.

Witnesses:

FRED E. BADNEY, G. E. SANDEEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0.

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