US1715739A

US1715739A - Concrete-working apparatus

Info

Publication number: US1715739A
Application number: US644568A
Authority: US
Inventors: Edward G Carr
Original assignee: LAKEWOOD ENGINEERING Co
Current assignee: LAKEWOOD ENGINEERING Co
Priority date: 1923-06-11
Filing date: 1923-06-11
Publication date: 1929-06-04
Anticipated expiration: 1946-06-04

Description

YJune 4, 1929. E. G. CARR CONCRETE WORKING APPARATUS Filed June ll, 1923 2 Shee't's-Sheet I Vg /ENTOIL www a/w. @,Mmmw

ATTORNEYS.

2 Sheets-Sheet 2 l n I m F owwe uw Nw u U QN ww www SJNAJV. M m www N 4 m I BY WWW June 4, 1929.

E. G. CARR CONCRETE WORKI NG APPARATUS Filed June llQ 1923 Patented June 4, 1929.

" UNITED STATES PATENT oFFICE. A

EDWARD G. CARR, OF CHICAGO, ILLINOIS, ASSIGNOR THE LAKEWOOD ENGINEER- ING COMPANY, OF LAKEWOOD, OHIO, A CORPORATION' OF OHIO.

CONCRETE-WORKING APPARATUS.;

Appucatinaaiea .Tune A11, 1923. serial No, 644,568.

`This invention relates to Vconcrete Working apparatus and the object of the invention is to provide a simple and comparatively inexpensive apparatus for working concrete, orV finishing concrete, manually, in the manner to be hereinafter described and claimed.

Referring to the drawings which accom-` pany this specification and form a -part hereof, which drawings illustrate an e1nbodiment of this'invention, and on which dra-W- ings the same reference characters yare used to designate the same parts Wherever they which are adapted to travel on the formsor rails 10 and 11.

A float- .'12, which is. preferably composed of a textile fabric, is secured to atrameV 13. The frame 13 is supported by bearings 14 from the bridge 5 in sucha manner that theframe 13 and the float 12 can be reciprocated transversely with respect to a road.; The frame 13 and the Vfloat 12 can be reciprocated manually bya hand lever 15 which is'pivoted in bearings 16and 17 secured to the bridge 5, Y

and which is connectedpby a connecting'rod 18, with a lever-,member 19 Which -ispassed loosely through aholein a'conning strapy 20 secured to the bridge 5. The lever mem?.

berV 19 is provided Vwith a hub 21 through a hole in which the longitudinal'inember -22 of' the frame 13 passesloosely. YThe hub 21 is provided with ratchet teeth 23 with which the ratchetteeth 24 on a collar 25, Which is iXedly secured to the longitudinal member 22 of the frame 13, vcoact, to hold4 the :trame 13 in definite positionseither With the ioat 12 in contact Withthe concrete or elevated from the concrete. A spiral spring 26'surrounds the longitudinal member 22 of the frame 13 and bears at one end against-a collar 27 iixedly 'secured to thesaid longitudinal member 22, and bears at its other end` against? the hub 21 so as to normally engagement vwith the ratchet` teeth 24 onthe collar 25. The spring 26 should be stiit enough to prevent disengagement of the ratchet teethin .moving the float 12 over the concrete, butit will be readily apparent that the frame 13 vand the 'float 12 can be turned up or down lay/separating thel

ratchet teeth

23 and 24. In the construction shown 'by inane thejdrawings, the

ratchet teeth

23 and 24 are numerous and short in length and \l-- shaped, so that the frame 13 can be grasped at either end, that is, `from either side ot' a road, and be turned up or down, the spring 26 yieldingv so that the ratchet teeth y24`Will force the ratchet teeth: 23 vaway and pass by the same. Y y Y `The Wheels 6, 7, 8, and 9 l,are illustrated by the 'drawings' as eonne'ctedin pairs by axles 28 and 29and the axle'29isillustratedl as ratchet Vteeth on both faces With which pawls provided with a ratchet wheel. 30 Whichhas can coact to rotate the axle and propel the machine. In the speciiic construction illustratedfby thedrayvings, the hand lever 15 is' providedavith oppositely disposed arms 31 andy 32 and a link 33 eitendsirom the arm-*32 With itsrloiver-'endy bent towards 'the ratchet Wheel'30 to act asa pawl inconnec-v tion kWith the ratchet teeth on oneside of the ratchet Wheel 30, anda similar, butreversely bent, link 34extends from the arm 31 to act as a p'aivlin connection `With the ratchet teeth on the .opposite face of the ratchet Wheel 30, in fa manner which. Will be, obvious from -an inspection of fthe drawings. spring 35 isl connectedtojlinks 33 and 33,and'34 to yield'to pass over the ratchet teeth on the ratchet Wheel k30.

VTracks 36 and 37 are secured to Yrock are supported by bearings40v and 41 Whichg' are secured to the bridges 4V and 5, respectively. The rock shafts 33 and 39 are pro# vided with

bevel gears

42 and 43 which mesh with bevel ,gears 44'and 45-secuied to a shaft 46 which is secured in bearings 47 ysecured vtothe side member 2. The rock shaft y39 is illustrated as `providedwith a lever .48 andthe lever 43 is illustrated as y Y Vprovided with a 'toot pedal 49. A pivoted keepv the ratchet teeth `23 on thef hub 21 in ,Y

latch 59,.Which"A iefprovidedk. with a plurality 90 and tends vtohold themin contact With the ratchet AWheelr30, While permitting fthe links c chine, over the surface of the concrete.

of teeth 51 and which is forced toward the foot pedal 49 by a spring 52, retains the lever 48, and the tracks 3G and 37, in any desired position of adjustment. The spring 52 is'illustrate'd as ofthe compression type and as bearing at one end against the abutment 53.

A roller 54 is supported by

wheels

55 and 56 upon the tracks 3G and 37 so as to be movable back and forth transversely of the rriela- 1e wheels 55and 5G are illustrated by the drawings asV being enough smaller' .in 'diameter than the diameter of the roller 54 so 'that the

tracks

36 and 37 will not contact with theV surface of the concrete, and the tracks 36 and A3,7may be Acrowned or archedto correspond with the crown required for av road. The roller 54 may be moved back and forth across the road by any suitablemechanism.

p The drawings illustrate plates57 and 58,

Veach of which-is provided with three holes,

slipped vover the ends of the gudgeons 59 and G and connected with the free ends-,of two' cables 61 and G2, forming,A in effect, two ,endless cables. These cables are wound raround drums 63 and G4 which are, secured to a l shaft 65, and lead y.around suitable fair lleadingl sheaves',fwhich are designated bya com-y monreferenceV numeral 66, to impart a general horizontal movement to the roller 54.

`The shaft 65 is provided with ,a crank 67 in close proximity to the hand lever115 so thatna man canoperate the handlever with one hand and the crank 67 Awithrthe other hand;

Any suitable means may be employed to disengage the links or pawls 33 and 34from the #ratchet wheel when lit isv desiredpto movethe machine in the direction against these links or pawls. The drawings illustrate `a wedge .6 8 which may be -moved by the lever69 -between the links or pawls and 34 to forcethem apart against theten- `sion ofthe spring to lfree thelinks or pawls from possibilityrof contact with the Y ratchet wheel 30. When the vwedge 68 is retraetedby the lever:69, the links or pawls and 34 will again beengaged with the ratchet wheel V30 by the spring 35. The drawingsY illustrate the wedge-'68 and the lever 69 as formed by'bending a rod to thel required shape.

As itvmay sometimes be desirable to use the roller -54 as av templet, `means are provided for preventing rotation of-the roller. The drawings illustrate the plate 58 as provided with a lug and a vpin 70 may be inserted through a hole in this Vluginto a hole in the gudgeon 60. 4 y

The reference numeral l71 designatesl a tool which fis provided with

handles

72, 73,

74, and which are of suchv length that theycan be readilygraspedby men standing on the bridges 4 and 5to work the tool as required or desired. The tool 71 illustrated by the drawings is a form of -floating or surfacing tool, and is illustrated to show generally a concrete working tool regardlessfof specific` function or type.V

The general operation of the apparatus will be obvious from the foregoing description. at the' desired rate of speed by the hand lever15 and the tloat 12 can be reciprocated at the same time. The roller 54 can be moved transversely with respect to the apparatus by turningthe crank 67. The roller 54 may be made of any desired size or weight'and can be allowedtorest with its entire weight oiithe concrete, by depressing the

tracks

36 and 37 suliiciently, or Vcan be kept from sinking too farinto the concrete by, properly positioning'the

tracks

36 and 37, or can be raised entirely from contact e )a avis can emovec orn` Th aa r ti b lf wird with 'the concrete by elevating the tracks 3G and 37 sufficiently. A decidedadvantage ofthe construction is .that the'roller 54 can be moved inncontact withthe concrete from one form to the center 'of a road, then lifted from Contact withthe concrete,'by elevating the tracks ,3,6 and 37, and moved over to the other form without being in contact with the concrete. By such amethod of operation the concrete is alwaysv moved away from both forms towards the center, or towards pawlsf33 'and 34 from vvthe ratchet wheel`30 andrturning up theiioat 12 and'frame 13.

lever lwhilethe apparatus is being'pushed rapidly forward, butin such operation', it would be better to disengage the links or pawls '33" and 34 from the ratchet wheel 30 by the lever 69 andthe wedge 68 to prevent the possibilityofa 'link lor pawl strikingfthe ratchet teeth on the ratchetl wheel 30 if theoperativedid not'time hismovementsof the hand lever 15 with the speed of progression of thel apparatus.

What isclaimed is:

1Q The combinationinconcrete working apparatus, of a movable frame, a roller, means for moving the roller with respect to the frame and permitting itfl to rotate by contact with concrete7 and 4means foi" rendering the roller activeer inactive onfthe concrete without interrupting the movement of the roller with respect toisaid frame.

2. The combination in concrete working apparatus, of a frame, a roller arranged to move across a road, means for moving the roller forward and backward, and means to enable the roller to be contacted with con crete from one side o the road to the center of the roadand to be removed from the concrete during thc remainder of its travel in the same ydirection of movement.

B. The combination in concrete working apparatus, of a float, a frame for said float provided with ratchet teeth, and a yieldable member provided with ratchet teeth to engagev with the ratchet teeth on the frame, the ratchet teeth being substantially V- shaped to permit the frame to be turned up or down.

4. The combination in concrete working apparatus, of a frame, a reciprocatable float connected with said frame, manually operable means for reciprocating said float in one direction, resilient means for reciprocating said float in the opposite direction, and mechanism adapted to be operated by said manually7 operable means for propelling said frame. Y'

5. The combination in concrete working apparatus, of a frame, a roller, means for moving the roller transversely with respect to the frame, means for preventing rotation of the roller, and means for limiting the contact of the roller with concrete to a part only of its movement in the same direction.

6. The combination in concrete Working apparatus, of -a 'ramecomposed ofk transverse'bridges and side members, a reciprocatable float, means for reciprocating the float vand propelling the apparatus simultaneously, means for moving the roller Jforward and back, means for simultaneously lifting or lowering the ends of the roller, and means yfor preventing rotation oi' the roller.

7. The combination in a concrete working apparatus of a frame, a roller movably associated with said fra1ne,rmeansto move the roller, and adjustable tracks for' raising and lowering the roller into and out ofV contact with the concrete while the roller is being lmoved with respect to said frame.

8. The combination Vin a concrete working apparatus of a movable frame, a roller movable transversely'with respect to theframe and adjustable tracks for causing said roller to contact with the concrete during the portion of the rollers movement with respect to the frame.

In Witness whereof I hereto aflxmy signature.

EDWARD G. CARR. v

a transversely movable roller,