US942474A - Floor-dressing machine. - Google Patents

Description

L. H. VBRUNNEAU.

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APPLIGATIOH FILED MARIN). 1908.

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LOUIS H. VERONNEAU, OF VIAUVIILLE,`

7[EIB. MONTREAL, QUEBEC, CANADA.

FLOOR-DRESSING MACHINE.

Specification of Letters Patent.

Patent-ed Dec. '"i',

Application filed March 19, 1908. Serial No. 422,i48.

To all whom it may I, l ois H. VERONNEAU,

Bc it known that relates to vvfloor tinishing machines, and more particularly to the arrangement of the runners for supporting the forward or operating end of the machine, and to means for adjusting the operating` tool to vary the effective Working of the same. As heretofore constructed, the great objection and dificulty with the majority of machines of this general class is that the carriage in which the operating tool is mounted, and the operating tool itself, are so connected that all movements of the carriage effect similar movements of the tool. The carriages themselves are so made that they follow all the irregularities of the surface over which they travel. Consequently, the tools carried by the carriages follow these same irregularities, with the result that the tloors or other surfaces are very 'imperfectly dressed. ln order to avoid this defect, it is necessary to mount the operating tool in such manner that. no undesirable movements of the carriage will be transmitted to it. Furthermore, it is always advantageous to so mount the shaft that it may be readily and accurately adjusted to vary the effective Working of the tool.

Broadly speaking, the invention comprises removable side plates adapted to be secured to the frame of the tool carriage, roller boxes pivotally connected to the side plates, and adjustable bearings pivotally mounted on the side plates and adapted to support the tool shaft.

In order to more clearly disclose the. construction, operation and use of the invention, reference should be had to the acco1npanying drawings forming part of the pres* ent application.

Throughout the several figures of the drawings, like reference characters designate the same parts.

ln the drawings: Figure 1 is a side elevav l to vary the cut of the planing or the side plate l.

is a front tion of the machine; and, Fig. 2

to exhibit elevation partly in cross-section la citizen of the United States of America, j the cutter.

compact form and be used as a sup- A suitable frame of simple construction may port for an electric motor, by which the tool of the machine is driven through suitable belt and pulley connections of Well knovvn form. One end portion of each of the sides of the frame is cut out. as indicated in dotted lines in Fig. 1.to allou' the removal of the tool shaft and tool, as will later appear. To the outer face of these sides oli the frame,

near the cut, outy edge of the same, are secured plates It. in such position as to coinpletely overlap the entire cut out portionsabove mentioned. These plates may be solidly and removably secured to the frame by screw bolts L2, provided with socketed heads, or the like. lach of these plates is provided With a vertically elongated opening or slot,

for the passage of the ends of the tool shaft The outer ends of this shaft are mounted in adjustable bearing blocks lt. which are pivoted to the side plates as at 5. rthe opposite ends of the bearings are provided vfith rack teeth (l, which are tuigagcd by a 7. This pinion 7 turns freelv about shank of a screw bolt. when tinv Vlt cned, but is prevented 'from turning the bolt is tightened. This due to clan'iping of the pinion between the bolt and side plate when the bolt is tightened. rthus, in order to adjust the bearing on which the pinions 'T are mounted are loosened, the pinions turned in one direction or the other for the desired adjustment, and then the bolts are again tightened to hold the pinions in adjusted position. llach of the bearing blocks is provided n'ith a slot S,- in which plays a limit or st op pin t) fixed to The purpose of this s pin is to engage the upper and lower Wa s of the slotr and prevent further movement of the bearing block. The relative proportions of the slots 8 and the vertical elongated openings in the side. plates i, are such that the shaft 3 mounted in the bearing blocks et may m'ovc vertically the full length of the openings in the plates, but cannot ymove quite far enough to either the upper or the lower edge of the openings. In the preferred forni of the ma chine, this adjustment amounts toabbut oneeighth of an` inch, which is amply suiiicient other tool blocks. the bolts l frictionally engage.

carried by the tool shaft 3 for all ordinary approximately abve the cutting tool, thus purposes.

couise be provided for by simply varying? the length of the slots.

rl`he greater part of the weight of the entire machine should be as near as possible over the tool, and just a little to the front of the saine. It necessarily follows that the tool carriage or frame should be provided with supports practically adjacent the outer ends of the tool shaft, upon which the frame may travel over the surface on which the tool is to be used. To that end, shells or roller boxes l0 are provided. These parts are` pivoted to the plates l at points l07 exactly and directly below theaxis of rotation of the tools, Consequently, the axis of oscillation of the shells or pivoted parts and the axis of rotation' of the tool, are in the same plane. Each of the boxes is provided with a plurality of small rollers or runners 1l, journaled therein and adapted totravel over the floor or other surface. A slotted lug 12 and guide bolt 13 serve to keep each box close to the face of its side plate, and to prevent twisting of the same. Of course, as will be evident on reference to Fig. ly the boxes 10 may follow all possible irregularities and uneven parts of the surface being dressed, without in any way afectiug' the operating tool in following such irregularities. The boxes simply swing or oscillate abgut their pivots l0', allowing the frame or carriage of the tool to-'follow a straight, even or level plane. The opposite end of the frame is, or may be, supported on suitable rollers or wheels 14, at either side. It ldoes not mattei whether these supports do or do iot follow the irregularities of the surface. f they do follow such irregularities, they will simply cause the entire frame to oscillate on the pivotal connections l0', and will not act to raise or lower the tool shaft in any possible degree.

The parts on one side of the machine are exact duplicates of the parts on "the opposite side, so the description above given will fit both.

lVhen it is desired to remove the tool shaft, the side plates are simply unbolted, and the shaft and plates moved outward through the openings cut in the ends of lthe sides of the frame. ,i

In order to preserve the knives, when a planing tool is used, a rotary brush l5 is used. This is placed adjacent one end Iofy the machine and driven from the planer by suitable belt and pulley connections, the .whole machine being drawn over the surtace on which it is'to be used by the handle, so that the floor or other surface may be swept clear ahead of the planer.

weight of the machine is tipped or thrown Of course, by.l drawing the tool=as above mentioned, the

Greater adjustment, may of iholding the tool atfall times toits work.

It is clear that many changes may be made in the construction and arrangements of the details, that many rearrangements of the parts may be had, and that many lother combinations of them may be resorted to, without in any waydeparting from the field ,i and scope of the invention, and it is meant 1 cation, wherein only a preferred forni of thev i stantially as set forth.

to include all such within the present appliinvention has been illustrated and described.

It will be observed that this machine com prises a carriage having a rolling pivotal su port, both at the front and rear, but with on y a single and invariable support of this kind at the forward end in the direction of the work, whereas the rocking boxes at the rear end provide an automatically variable support of the saine nature permitting the tool to operate in all circumstances, but affording an automatic adjustment to inequalities by the action of the-boxes With rollers both before andbehind their pivots in the line of motion, These boxes also protect the rollers carried thereby and are very simple and strong, each being practically a straight bar of U-shapc in cross section.

Thislinachine is adapted to carry weight and to do hard work which would be4obviouslly beyond the capability of any hand too f Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, iszl. In combination with a support and side plates secured thereto, a dressing tool mounted in said plates, boxes pivotally mounted to said plates, and a plurality of runners lmounted in each boXfand almost entirely incloscd thereby, one or more of said runners being ou each side of the piv'otal point of the box containing them, substantially as set forth.

Q. In combination with a support and side plates secured thereto, a dressing tool mounted in said plates, approximately straightbars parallel to the line of operation and pivoted at points between their ends to the said plates, and runners, a plurality of which are carried by each of said bars, one or more of such runners being arranged lrespectively before and behind the pivotal point of the bar carrying them, substantially as set forth.

3. In combination with a carriage having a roller support at one end and side plates mounted on said carriage, a dressing tool between said plates, a pair of parts pivoted to its sides near the other end thereof. each of said parts being proqiderl before and hehind its pivotal point with nll. ln con'ibination with a carriage and runners, subies essing tool carried thereby, a roller supessere.

port for one end of said carriage and means for providing automatically yielding support for its other end, said means comprising' a pivoted bar and runners carrie by said bar, one or more of said runners being respectively before and behind its pivoted point, .fnibstantialljvv as set forth.

5. ln Combination with a carriage and dressing tool carried thereby, a pivotal support for one end otA said carriage and supporting means carrying a pluralitjr of rollers arranged in line parallel to the line of operation, said means being pivoted at, a. point between the more forward and the more rearward' of said rollers, substantially as set forth.

6. In a door dressing machine, a sapgart, side plates secured thereto, hearingflneeks adjustably secured to said side plates, a dressing tool mounted in said bloeitr` etres pivotally secured to each of said-Sife splates and adapted to oseillate in a vertira-l piane and a plurality of runners arranged parallel to the line of operation and mounted-infield boxes.

7. In ay floor dressing machine',I a stijport,

side plates secured thereto, a dressing toolA the line of operation and mounted in said boxes.

8. Ina floor dressing machine, a support,

i side plates secured thereto, a dressing tool adjnstably mounted in said side plates, means for adjusting said tool, means for holding said dressing tool in adjusted position, boxes secured to eaeh of said side plates and adapted to oscillate in a vertical plane, and a plurality ot runners arranged parallel to the line of operation and mounted in said boxes.

In Witness whereof I have hereunto set my hand in the presence of tivo witnesses.

LOUIS l-I. VERQNNEAU.

Witnesses:

EUGENE M. SLINEY, M. S. Bassoon.

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