US3046856A

US3046856A - Concrete finishing device

Info

Publication number: US3046856A
Application number: US804480A
Authority: US
Inventors: Baxter Orion Martin
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-04-06
Filing date: 1959-04-06
Publication date: 1962-07-31
Anticipated expiration: 1979-07-31

Description

July 31, 1962 o. M. BAXTER CONCRETE FINISHING DEVICE 2 Sheets-Sheet 1 Filed. April 6, 1959 INVENTOR O. M. Baxter FIG.3.

BY WW EM ATTORNEY July 31, 1962 o. M. BAXTER 3,046,855

CONCRETE FINISHING DEVICE Filed April 6, 1959 Z Sheets-Sheet 2 INVENTOR ATTORNEY United States Patent 3,046,356 CONCRETE FINISHING DEVICE Orion Martin Baxter, 4802 Roosevelt, San Antonio, Tex. Filed Apr. 6, 1959, Ser. No. 804,480 1 Claim. (Cl. 94-48) The present invention relates to concrete finishing device and has for an object to provide a device for rough or fine concrete finishing in which new forms of handle arrangements provide adjustability for various new modes of operation.

A further object of the invention involves a new form of frame over which expanded metal or other suitable concrete contacting material is placed or stretched.

A still further object of the invention is to provide the finishing member with certain new arrangements of connecting means by which the shafts of handles may be accommodated to the finishing member in various angular relationships with means for connecting the handles together in one position for presenting a new manual approach for producing a novel form of manipulation of the instrument and with new case in its handling.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claim appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views:

FIGURE 1 is an isometric view of one form of a concrete finishing device constructed in accordance with the invention with the parts collapsed and assembled in small compass for packing and transportation.

FIGURE 2 is a similar view showing the device set up for operation with the handles in one assumed position.

FIGURE 3 is a top plan view of the finishing member showing the stub shanks of the handle shafts pivoted thereto.

FIGURE 4 is a view similar to FIGURE 2 but with the handles turned angnlarly into a different position for a difierent mode of operation.

FIGURE 5 is a cross sectional view taken on an enlarged scale on the line 6--6 in FIGURE 3.

FIGURE 6 is an isometric View of a modified form of device.

FIGURE 7 is a fragmentary sectional view taken through one of the stub shanks and tubular handle shafts and illustrated in detail a form of retaining device.

Referring more particularly to the drawings, 10 designates an expanded metal or other base which is stretched or affixed over a metal or other frame comprising the following members: longitudinal outside bars 11 and 12 and longitudinal inside

bars

13 and 13 which bars are spaced apart and connected by

end bars

14 and 15.

These various bars 11-15 are set on edge with the base 10 secured to the lower edges thereof and center and side flat '

bars

16, 17 and 18 laid crosswise over the upper edges of the bars and affixed thereto as by welding or otherwise.

The center flat bar centrally thereof supports a center socket 19 which is internally threaded. The

side bars

17 and 18 support centrally thereof pairs of upstanding per

forated ears

20 and 21 which receive therebetween the

stub shanks

22 and 23 hinged to the pairs of

ears

20 and 21 by

pivot bolts

24 and 25 having

nuts

24 and 25 threaded thereon for tightening the

stub shanks

22 and 23 in various angular positions or for relieving the pivot bolts free of any tight frictional restraint so that the

stub shanks

22 and 23 may freely pivot about the same in the operation of the tool.

Tubular shafts

26 and 27 are telescoped with the

stub shanks

22 and 23 to provide a longitudinal and also an angular adjustment. The adjustment may be maintained Patented July 31, 1962 by set screws 28 and 29 rotatable by means of connected

handles

30, 31 and

lock nuts

32, 33. At their outer ends the

shafts

26, 27 terminate in

curved handles

34, 35. At its free end one of the handle members 35 is provided with a socket or attachment member 36 for the shank 37 which projects forwardly [from the free end of the other curved handle 34. A set screw 38 on the socket 36 may bind into the shank 37 to maintain the coupling, the set screw having a handle39 for this purpose. The set screw is also provided with a lock nut 40 threaded thereon and positioned to jam against the socket side wall to maintain the adjustment. I

Referring more particularly to FIGURE 6, a gooseneck fitting has a threaded shank 42 for screwing into the internally threaded center socket 19. At its other end the gooseneck fitting 41 is also provided with a threaded shank 43 for threading into a handle shaft extension 44. A board 45 is attached beneath the base 10 in any suitable manner and preferably extends beyond the ends of the finishing member.

FIGURE 1 shows the device in a collapsed position in which it occupies a minimum of space. The

stub shanks

22 and 23 are folded down toward one another substantially parallel with the finishing member while the bandles and their shafts are completely disconnected from the stub shanks and laid on the upper edges of the

bars

11, 12, 13 and 1 3. Substantially all parts are accommodated within the confines of the outer longitudinal members 11 and 12 and the

end members

14 and 15.

FIGURE 2. shows the

stub shanks

22 and 23 erected with the

handle shafts

26 and 27 telescoped therewith and with the curved handles turned mutually together and atfixed by the shank 37 and socket 36.

FIGURE 4 shows the

curved handles

34, 35 disassodated and turned at right angles to the position of FIG- URE 4, both handles projecting in the same direction. This is permissible by loosening the set screws 28 and 29 and rotating or angularly turning the

shafts

26 and 27 on the

stub shanks

22 and 23. Thereafter the

handles

30, 31 are rotated to afiix the set screws so that this adjustment may be secured.

In FIGURE 6 the

stub shanks

22 and 23 are shown as having been rotated outwardly to positions substantially parallel with the finishing member in which positions they constitute weight factors tending to balance the tool which in this instance is connected to a single handle extension 44 through a single gooseneck 41 connected to the single central socket 19. Thus the long finishing member including its board 45 may have a tendency to rock about the center socket 19 or the gooseneck and handle connection at this single central point and a condition of stability is afforded by the

stub shanks

22 and 23 when rotated to the position indicated in FIGURE 6. At 44 is indicated only one handle extension of which there may be several jointed together in any suitable manner as by the screw shanks 43. The base with the center handle attachment as illustrated in FIGURE 6 and the handle extensions 44- permit the use over large areas without the finisher having to walk on the concrete. It will be understood that, in connection with this FIGURE 6, that the gooseneck 41 may be bent to any desired angles and the handle extensions 44 will accordingly extend ofi to low or high points to permit accommodation to various positions and desires of the operator.

It will thus be seen that the invention provides jointed and movable connections, imparting great flexibility which enables the leveling device to be used at difierent angles and in different situations all of which will be appreciated by those skilled in the art and Will contribute to an easier manipulation of the instrument and more satisfactory operations upon the concrete.

In the collapsed position of FIGURE 1, the device may be carried in an automobile or by hand on a bus. Together with a gooseneck the device involves only four pieces and its weight may be restricted to approximately twenty pounds. a

- The metal frame covered by the expanded metal is used to force the fines (sand and cement mortar and fine stones that are forced tothe surface) and water to the surface on a freshly poured concrete slab or sidewalk and will thus make the surface easier to finish.

The device will get into the corners easily and is light and fast. It is-equally applicable to four feet sidewalks or wide slabs.

The device is easy to carry in'the position of FIGURE 1 as it isapproximately 47" by 8'! wide. 7

Although I have disclosed herein the best form of the invention known-to me at this time, I reserve the right to all such modifications and changes as may come within the scope of the following claim.

What is claimed is:

. A concrete working device-for urging large aggregate toward subgrade and fines to the surface for subsequent finishing comprising (a) an aggregate separating member having opening therethrough and adapted to enter the plastic mix, said openings permitting fines to Work their way to the surface through the openings of said member,

(b) spaced parallel pivots mounted on the member,

(c) stub shanks pivoted on said pivots,

(d) a pair of handle members each having a straight lower end and curved upper end,

(a) the lower end of each handle member being hollow and receiving one of said stub shanks therein,

(1) means for securing each said stub shank in one of said handle members in one of a plurality of angularly related positions whereby said handle ReferencesCited in the file of this patent UNITED STATES PATENTS Schottler Oct. 10, Rook Nov. 10, Abram June 29, Eggert Feb. 25, Weber Feb. 7, Tullis Apr. 25, Mall -a July 30, Tamblyn Dec. 22, Jackson Dec. 22, Fischer July 25, Jackson Sept. 21, Jackson -2 Nov. '9, Feeley et al July 5, Jorgensen Jan. 23, Clement Apr. 7, Ferguson May 22, Freeman May 13, Alessio Aug. 4, Kadlec Mar. 15, Gresham Aug. 16,

FOREIGN PATENTS Canada July 6,