US1044011A

US1044011A - Portable surface-finisher.

Info

Publication number: US1044011A
Application number: US66699411A
Authority: US
Inventors: Jaffrey P Buchanan
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-12-20
Filing date: 1911-12-20
Publication date: 1912-11-12
Anticipated expiration: 1929-11-12

Description

I. P. BUCHANAN.

PORTABLE SURFACE FINISHER.

APPLICATION FILED D130. 2o, 1911.

2 SHEETS-SHEET 2.

WIT/M8858 atented New. i2, w12.

' -a practical t'ool o VUNTTED STATES PATENT carica.

J'AFFBEY P. BUCHANAN, OF NEXVARK, NEW JERSEY.

PORTABLE SURFACE-FINISHER.

To all lwhom 'it my concern:

Be it known that I, JAFFBEY P. BU- CHANAN, a subject of the King ofGreat- Britain, and a resident of the city ot' Newark, 'county of Essex, and State of New J erscy', have invented certain new and usetul tmprovements in .Portable Surface-Finishers, set fort-h in the following specification.

This invention relates to portable machine tools and more particularly to tools for removing or polishing surface portions of wooden, metallic and other objects. One of the pur oses thereof isto provide the above character which may be easily transported, expeditiously set up inoperative relation to the article to be worked, a'nd which may be accurately adjusted both as to the height of the said' article and as to the character of the work to be accomplished.

Further objects of the invention exist in the novel construction and combination of the various parts of the apparatus, illustrative embodiments of which are shown in the accompanying drawings, which form a part of this application, which are particularly described in the following specification, in which like characters. designate correspondin parts, and in which,- A. l

Figure 1 is a side elevation of one embodiment of my invention showing the tool carriage in the position it would occupy after having made approximately one-half of a complete cut; l" 1g. 2 is a plan view of the same illustrating the position of the tool carriage relatively to. the transverse frame, after a number of complete cuts and approximately one-half cut more have been made; Fig. 3 is a rear elevation showing parts in the same 'relative position as in Figs. 1 and 2; Fig. 4 is a fragmentary plan view .of a. modilication of my invention; l F ig. 5 is a front elevation of the tool can" ringe and operating parts; Fig. is a side elevation of thc same. .and Fig. 7 is a {rac- I tional side elevation showing the belt tightl @ning means.

Referring now in detail to the drawings, the apparatus consists essentially ot' three parts.a portable base frame A which, in working poz-llion. is rigidly secured either directly or indirectly to the work; the transvcrse'frame B which movably supported and guided with a. transverse movement relatively to the work by the frame A; and the tool carriage C movably supported and Specification of Letters Patent.

Application filed December 20, 1911. Serial No. 666,994.

Patented Nov. 12, 1912.

guided in the opposite transverse direction by the said traveling frame B.

The base frame A consists of a luralitg.7 of frame beams ot' suitable materia shown as steel angle beams, joined one to another to form a rectangular skeleton structure, two of the opposing parallel angle beams 1 provide parallel tracks or trackways 2, 2 upon which the wheels of the transverse traveling frame B roll. rlhis rectanofular frame A is provided with several meniliers 3, (four being illustrated each adjacent the corners), which have sockets formed therein in which leg screws 4 are mounted. Each le screw 4 is thieaded into a tubular leg 5: uitable means is provided for relatively rotating the leg screws and legs for the purpose of vertically adjusting the mounting of the frame A.' This relative rotation may be accomplished in any suitable manner, hand Wheels G being illustrated for that purpose. Each of the tubular legs 5 is preferably provided with suitable means, shown in the form of a scale for indicating degree 'of adjustment. In the embodiment shown a narrow slot 7 extends longitudinally of the leg, -the margin of which slot is divided oil' into a scale 8. The nger or pointer 9 is shown loosely associated with the end of each screw 4 and extending out of the slot 7 to coperate with the scale 8.

Suitable means is provided for rigidly clamping the frame Apto the work. In the embodiments illustrated the clamp screws 10 are. suitably mounted in the beams 1. Each screw 10 is shown fitted with a hand-wheel 11 to facilitate its manipulation and with a loosely attached tlattened piece 12 to abut against the side of the work or Work supporting table 13, whereby the same may be clamped rigidly to the frame A. Y The work being operated upon as illustrated in the drawings is a butchers chopping block. but it is 'shown merely for the purpose of illustration, the tool being suitable for operation upon various kinds of work.

ln the modification shown in'Fig. el the clampingr screws 10 are shown fitted at their ends with extension blocks 14 suitably shaped in conformitv with the cylindrical piece of work therein shown and of a size.

to adapt the .trame to smaller pieces of work than that illustrated in Figs. 1, 2 and 3.

It. is, of course, to be understood that vari-I cus extensions of this charactersuitable for articles o f various shapes and sizes are con@ templated. The transverse or traveling frame B is also rectangular in form and of a length corresponding to the width ot the base trame it but considerably narrower than the length of the base frame. This frame B is constructed of framed beams l5, and i6, 16 of suitable material and shown steel angle beams. The two longA beams t5, '1.5 provide a suitable guide-way for the base plate of the tool carriage C for the same to move in a direction at right angles to the movelnentot the. traveling trame P itself. ln the embodiment illustrated the vertu l, flanges of the angle beams serve as contimngmeans for the tool carriage (l.

Secured in the short sides in the frame B are sdlbs 17 upon Wluch.th`e grooved wheels lb" are rotatably" mounted, thegrooves ot thesaid wheels being of suitable torni to receive the vertical Hangers .2-l of the angle beams i--l all of the frame A'.

The tool carriage (l comprises a baseplate 19v Which-fits snugly but slidably between pmallel flanges of the'beains' l5, l5 and, si'ipported thereon, is the driving motor 20. Secured to the underside of the base-plate i9 are; the bearings 21 within which isjournaled the tool shaft Q2. Suitable means for difivi'g this tool-shaft from the motor Q() is provided. In the embodiment illustrated this means comprises a pulley 23 on the end of the tolpshatt Q2 driven by the motor Z0 through the medium 'of its pulley 24 and the belt The opposite end of the tool shaft 221s formed to receive the op n'atii1g tool 26 which may'be a polishing, abrading or cutting tool as illustrated. rThis tool is shown held in working position by the nut 27.

f Upon the lower side of the base-plate 19 and adjacent the rearedge thereof are a plurality of bearing or supporting plugs 28 adapted tio-rest slidably upon therear angle beam l5 and to support the rear portion of the 'tool carriage thereon. Suitable means for adjusting. the elevation ot the working 'tool-26 is provided. ln the embodimentillustrated this means comprises a pair of adjusting screws Q9 threaded through the base-'plate 19 along the front edge thereof so that their ends engage the forward angle beam l5. Located between the said screws and 'secured to the base-plate lil-is a scale member 30. Suitable means is provided for indicating through the medium of the scale member 30 the` vertical adjustment of the aforesaid screws 29. This means is 'shown in the form ot pointers 31, one loosely7 supported by each adjusting screw and relatively, immovable longitudinally thereof. Each pointer is forked atits end so as to straddle the edge of the said scale member 30, whereby the pointer is prevented from turning with the screa7 29. A slight but -suic'ient horizontal adjustment may also. be

effected by the screws 29 to incline the baseplate, by screwing` one screw 29 lower than the other. This adjustment may be desirable for setting the cutting edge of'the tool with greater precision. Means is also shown t'or the purpose of tightening the driving belt This means comprises a novel mounting 'for the motor 20. The rear foot or Jfeet of the motor are provided with a halt round strip 32 to serve as the bearing upon the base plate 15), while the said feet are held down by the holding` down screw 33. Adjusting screws H4 threaded through the base plate lil engage the trout toot. 35 ol' the motor to adjust the .same to various elevations, the motor tilting or hinging on the halt roun lstrip-32 lwhen the screws 34- are uuinipulated. The frontitoot of the motor held down and set in lposition by the holding` down screw 36.

From the foregoing, the operation of my portable tool-mill be largely obvious but, as

conducing to a clearer understanding therel ot', it may here be notedthat when itl is desired to perform Work, such as t-he squaring up of the surface of a butchers'block, the base frame A is set up surrounding the block `and the height thereof adjusted by turning the handwheels or other means in the legs. It' the trimmed surface is to be true with the floor the indicators on the legs are set at tlie same height but it the floor is sloping or uneven the legs are then adjusted to render the frame true to the horizontal or to effect. any desired angle. The centering screws 10 are then set up, extension blocks being used if necessary, whereby the base `trame and work are rigidly held together. The transverseor traveling frame B is then placed on the base frame A and thc tool carriage is set in its proper position th'ereon. The electrical connections having been made to the motor, the traveling frame and tool carriage are moved to and froover the surface of the block and adjusted by the screws 29 until the cutter Qil; just touches the highest point of the block. The traveling frame is the-n brought back to its limit of travel and the tool carriage moved transversely to its left' 'the work the tool carriage is lowered by means of the screws 2S) to give the desired depth of cut and this adjustment may b e accurately made by noting the position of the indicators 3l upon the scale 30. The motor ifow beingstarted and the traveling frame pushed toward the front of the base frame, the cutter travels in a straight line and removes all of the material in its path, to the desired depth. Having finished its cut it is returned to the back of the machine by the operatorJ and the tool carriage is then moved transversely upon the frame B, a distance equal to the width of the cutter. These, two

.operations are then repeatedA as often as is of a. second frame mounted electro-motor and said surface of l scribed, the combination with a. rigid rectanguiar portable frame adapted to surround pieces of work of various and irregular outsaid frame plurality of legs,

planing tools but 4is also adapted for the each. or" said legs being operation of a grinding or polishing tool, all adjust-able 'for coperating to support said denoted generically by' the term working frame in a horizontal or an inclined posi tool. tion, and means adjustable relatively to said l-Vhatis claimed and what is desired to be secured by United States Letters Patent is i u'lar outline of a 1. In an apparatus of the character detraute scribed, the combination with a. rigid reetanframe; gular portable frame adapted to surround a piece of Work, said frame having adjustable supports for supporting said frame in a horizontal4 or an 'inclined means adjustable relatively. to clamping said frame to said piece of work; of a second mounted to travel upon said lirst a tool carriage slidably mounted upon said second frame;.an operating tool carried by said carriage; an electro-motor carried by said carriage,r adjustable means position, and between said carriage. and said second frame said frame for whereby said carriage may be inclined relapiece of Work; .to travel u on said first frame; a tool carriage sliday ly l said mounted upon sa'id second frame,- an open l means between said electro-motor and said ating tool carried bysaid carriage; an elecj operating tool; and means operative bel said carriage vertically relal for adjusting said electro-motor relative to said carriage to adjust said power transmission means.

between' said In Witness whereof, I have signed my operating tool; a'nd naine to this speeioation, in the presence of means operative between said'electro-motoi" two subscribing witnesses. A 1

il position of said operating tool relatively to second fra-me; power transmission power transmission means and said carriage for Vadjusting' said electro? J AFFREY P. BUCHANAN. motor relative to said carriage to adjust 'said g Witnesses: power transmission means. CHARLES J. KIERAN,

2. In 'an apparatus ,of the'charac'ter del BLANCHE BUCHANAN.

l tively to said second frame for adjusting' the fre-mejor clamping said frame to the irreg-