US2441535A

US2441535A - Masonry cutter

Info

Publication number: US2441535A
Application number: US710097A
Authority: US
Inventors: Eugene P Sanders
Original assignee: Champion Manufacturing Co
Current assignee: Champion Manufacturing Co
Priority date: 1946-11-15
Filing date: 1946-11-15
Publication date: 1948-05-11
Anticipated expiration: 1965-05-11

Description

May 11, 1948.

E. P. SANDERS MASONRY CUTTER Filed Nov. 15, 1946 2 Sheets-Sheet 1 FIG. 2

lAn/Ezvr-ax EUGENE P. SANDERS May 11, 1948. E. P. SANDERS 2,441,535

MASONRY CUTTER Filed Nov. 15, 1946 2 Sheets-Sheet 2 K i r '/NVEM7O/? FlG .-5. 4 v EUGENE P. SANDERS B /Zv[}i L,/2

147- TORIVE Y Patented May 11, 1948 MASONRY CUTTER Eugene P. Sanders, Allendale, N. J assigno'r to Champion Manufacturing 00., St. Louis, Mo.,

a corporation of Missouri Application November 15, 1946, Serial No. 710,097

7 Claims. (01. 125-13) 1 This invention relates to machines of the rotary 1 cutter type and particularly to machines for cutting masonry blocks, ceramics and the like.

An important object of the present invention is greatly to simplify and improve upon the construction and operation of machines of the rotary cutter type whereby the cutting of masonry and ceramic blocks or the like may be accomplished more economically and with accuracy and convenience.

It is an object also to provide a machine of the above character in which the rotary cutter and mounting means therefor is capable of a range of positional adjustment for accommodating various sizes of masonry or ceramic objects to be cut, and in which the rotary cutter is mounted or otherwise arranged for yielding or floating movement relative to its mounting means during cutting operation to compensate for variations in feed and cutting loads.

Another object of the invention is to be found in the construction and arrangement of a machine for cutting masonry or ceramic objects in which a cutter operating power head. assembly is mounted for movement independently of the rotary cutter mounting means andin a manner to maintain its operative driving connection therewith throughout the range of adjustment of the latter.

Other objects of this invention are to be found in the simplified arrangement and low cost construction of a machine of the present character rendering the same conveniently collapsible for quick and easy packaging as a unit, in the provision of means for reducing or suppressing the objectionable dissemination of dust and particles usually produced in the cutting operation as by the provision of a fiuid'circulated medium which is directed into the zone of action of the cutter and is thereafter collected for recirculation, and in the arrangement and use'of the fluid collector as a guideway for thesupport of a carriage'assembly upon which the masonry or ceramic objects are placed for cutting thereof.

The foregoing objects as well as many advantages of the present machine willbe more specificallypointed out in the following detailed description relating to a presently preferred embodiment thereof as illustrated in the accompanying drawing, in which:

Fig-1is'an assembly view, in side elevation of the rotary cutter type machine;

Fig. 2 is a similar view illustrating the machine in its collapsed condition ready for unitary packa in e Fig. 3 is a top plan view of the machine shown in Fig. 1; 7

Fig. 4 is an enlarged and fragmentary sectional elevationalview taken at line 44 of Fig. 3;

Fig. 5 is a further sectional elevational view of the machine taken at line 5-5 of Fig. 1, and

Fig. 6 is a sectional elevational view taken at line 6 '-6 in Fig. 1. V

In the drawing and particularly Figs. 1 and 3 thereof,.the improved machine may be seen to include. a table-like supporting structure I for apower head'8, a cutter head 9 and a carriage l0 upon which the ceramic or masonry block A or other object. to be cut is placed.

More speciflcally,.the supporting structure 1 (Fig. 1) is constituted of a shallow, open top tank H, at each of the corners of which a leg member I2 is suitably pivotally connected. The longitudinally spaced pairs of legs at each side are rigidly braced against collapsing movement by suitable angularlydirected bracing elements l3 pivoted to the legs and releasably attached in pairs to the side wall of the tank I l at a common securing element I 4. This arrangement readily permits the table structure to be collapsed, as shown in Fig. 2. as the'legs l2, upon release of bracing elements from means l4, may be pivoted to an inverted or upright position and again secured by attachment of the bracing elements at means I4. As viewed in Figs. 1 and 2, the left hand pair of leg elements l2 carry therebetween a curved plate I 5 which, in the position for packaging of the machine, is moved in to position to act as a protective shield for the power head 8. By preference the shallow tank II is arranged to have its longitudinal side walls, act as means defining a guide way for the article supporting carriage l0, and in which the upper edges [6 of the sidewalls are engaged by carriage rollers l1 suitably-mounted on the carriage platform I8. This platform is provided with a stop plate I 9 at the 'front, transverse margin thereof to engage the objector block A and effect movement thereof with the platform.

The table structure I is provided with laterally spaced andupstanding pedestal members 20 suit: ably formed, of .sheet metal and rigidly secured to. the tank side walls near the rear end wall 2| thereof, as shown in Figs. 1, 2, 3, and 5. Each such member 20 is notched at 22 in its upper end for the operative support of a shaft 23 extending therebetween. This shaft is freely bearinged in each notch. 22 and carries at one end a fixed and depending sector plate 24 which is adapted to move close to the inner surface of raised toan arcuate path abo'ut the-fixed shaft and relative to the cutting head,; whereby to loosen the drive belt 62, as for belt changing purposes, but its downward movement is limited by engagement with the" end of the belt tension adjustment bolt 64, the weight of the motor mounting assembly of course, maintainingthe belt under tension. It will app ar that the weight of the motor acting on one side of the shaft 23 tends to counterbalance the weight of the cutting head on the opposite side; h

The present machine is also suitably provided with a fluid spray system for bathing the cutter disc to suppress dust. This system includes a, fluid circulating pump I59 (Fig.1) suitably mounted on tank wall 2| and operated by an extensible belt 70 from a drive pulley 'Il mountedgon the shaft SI of motor 51 (Figs. 1 and 5). The pump has its suction pipe 12 directed into the tank I I, while the delivery conduit 13 extends upwardly and over the pedestal assembly for connection with a flow divider fitting M (Fig. 3) such that fluid pumped thereto will flow through each of the

lateral feed lines

15 and 16 to suitable spray head (not shown) positioned internally of the cutter disc housing 39 and at each side of the cutter disc. The fluid leaving the cutter disc runs over the carriage l0 and is collected in the tank II for return to the pump suction'pipelZv and re-use. When desired the fluid may be'drained from the tank H through a bottom drain fitting 11 (Fig. 1). In conjunction with the above described fluid circulating system the machine is provided with a splash guard 18 at the" rear'of the tank I l and an overhanging guard 19, at one side of the upper end of the arm structure 34 (Figs. 3 and 5).

In view of the above detailed description, the operation of the present machine should now be apparent. However, for purposes of completeness the operation is described as follows:

Initially, the cutting head is adjusted to set the cutter disc for the desired depth of cut, and this involves an angular adjustment of shaft 23. Thereafter the shaft 23 is immobilized by means of the clamping assembly identified with clamp handle 21 so that any angular movement of the cutting head will be relative to the shaft. relative movement of the cutting head in a direction to raise the same is opposed by spring 49, and the range of relative movement is limited by the setting of the stop nut 54 by knob 53. When using certain types of cutting discs a non-yieldable mounting is preferred, in which event the stop nut 54 is drawn up tightly against portion 32 of arm 3!). The more usual practice, however, is to set the clamping knob 53 to allow for upward displacement of the cutting head, and to adjust spring 49 by knob 48 to place the spring under initial compression. The degree of initial spring force determines the yieldability of the cutting head, and the proper setting of this factor will depend upon the density of the material to be out.

As the masonry block or other object to be cut Such is fed into the rotating disc 42, the latter tends to ride up the object, but such movement is opposed by the spring 49. By alternately pressing the object toward the blade 42 then relaxing the forward pressure, the blade moves'in'an oscillating fashion up and down in the cut groove until the cut is completed. This has proved to be a very efllcient and effective cutting action.

While the present embodiment is that .of'a preferred machine, it should be understood that modifications, rearrangements and possible variants may be suggested after a full understanding of this disclosure and it is the aim to cover all such variants and equivalent structures within the scope of the claims hereto appended.

What is claimed is:

1. In a machine of the character described, a frame structure defining a guide-way, a work supporting and feeding carriage movably mounted on said guide-way, a rotary cutter, an operating arm for said'rotary cutter enablingpositionment of the latter in the path of movement of the work on said carriage, meansfor mounting said op erating arm on said frame for selective positionment thereof relative to the work on said carriage, a power head mounted on said frame and operatively connected with said rotary cutter, said power head being arranged to move, independently of said'operating arm to maintain its connection with said rotary cutter relative to selected positions of said operating arm, and means affording a resilient connection between said operating arm and mounting means therefor, whereby said operating arm during work cutting operation of said rotary cutter may have a relative floating movement to compensate for work feed variations and variations in cutting loads.

2. In a machine of the character described, a. frame structure defining a guide-way, a work supporting and feeding carriage movable over the guide-way, a cutter, an'operating arm for said cutter enabling positionment of the latter in the' path of work feeding movement of said carriage, means for mounting said operating arm on said frame for selective positionment relative to the work on said carriage, a power head carried on said frame and operatively connected with said cutter, said power head being arranged for movement independently of said operating arm to maintain its connection with said cutter relative to selected positions of said operating arm, means for releasably securing saidmounting means for the operating arm in a selected position, and means affording a floating connection between said operating arm and mounting means therefor, whereby during operation of said cutter, the same may move in a direction to compensate for work feed variations and variations in cutting loads.

3. In a machine for cutting ceramic or masonry objects, a frame defining a guide-way, an object supporting and. feeding carriage movable along the guide-way, a pedestal assembly on said frame, a shaft rotatively bearinged in said pedestal assembly, means for selectively fixing its position of rotative displacement, arm means fixed on said shaft to move therewith, a cutter, means operacutter"dnringamovementaofetherlattemwhen in-Lope erationa 4a. Inamachinerfomcuttingceramiolor masonry objectsgarirameedefiningg a guide-way, an; object supper-ting and f eeding carri-agemovable along thevgnideeway; a pedestal assembly on said frame; a-qshait.rotativembearinged in: said;pedesta1 assembly, meanssfon'selectivelgn-fixing itstposi-tion of?rotative.:displaxzem631117,,aacutter mean-sto-support-said-lcutter iomsaidzshait for movement relativeethereto a zpower; headconnected .tcr said .cutterrande: havingg suppostaom said-"shaft: for. move-v ment rrelative thereto; and zmeans movable with said shaft: and; having aaconnectionwithusaid cutter supporting means,- for, determining,v upon displacement of said shaft, an initial se1ected .p0 sitiom of said; cutter: inathe. path; of, feed of an Obj @0131 oa said -.carriage,, said connections. between said, last-.meansrand-n-the cutter, supportingimeans being ofaa ,character toipermitailimited floating movementlofsaid ,cuttervtoscoxnpensate. the. latter for; variationsminlieed cuttingloads. v of the obiecton saidcanriagea 5.=.Inl.a machine asrsetionthtin claim/1,..and'in which.. saidconnection between said lasts-means andu then cutter. supporting means is of, a ,resilient charactertopermitja li'mitedflfloating movement. of. said cutter supporting .means and cutter. to com pensate for excessive rates or feed of theuobjecti ornsaid'" carriage. and, for variations incutting loads.

6. Ina machine for-cutting ceramic or masonry obiects, ,amframehaving asguide-way, an objectsupporting. and .feding,,-carriage movable along the gnide..-way,,a pedestallassemblyon saidframe, a shaft ,rotatively bearinged .in said pedestal as.- sembly, avclamping meanspforselectively fixing its positionof Irotative displacement ,1 a cutter, means to'isupportsaid; cutter onsaidshaft for move:- ment relativethereto; ,aniarm fixed. on said shaft and resiliently, connected, with said cutter sup? porting means to permit a limited degree :of movementr of.th'e latter relative to the selected fixed position .of saidishaft; ,means for adjusting said resilient connection-to. alter therd'egreer of movement afforded ithereb'y. and a cutter operating 10 Videspaced bearings; at shaft' rotatably mounted in ..the pedestal bearingsa cutter,- means; operatively mounting; said'vcutter on: said shaft in work cutting relationwith said; carriage andafor movement relative .to-saidrshafm ,a powerhead inde-l pendently movably mounted on said-. shaft. and

operatively connected with said". cutter, movementofsaid cutter mounting" means being; at-. tended by, movementofsaid power head-ima manner .maintain-ing the cutteroperating; con! nection therebetweemran annmembenv fixedwon said shaft, first means adaptedito connect said arm member andcutterl mounting means for limited: relative movement, second: means of resilientflcharacter afiordinge a: connection between said arm: member? and cutter'mounting meansfor normally maintaining the= same against relative.- movement, and. clamp means adaptedlto fix said:shaft against rotation and determine the positionz of said fixed armemember;

said, first and second: connecting means-being arranged to determine the'initial position ct said cutter mountingvmean-saand provide for" floating movement thereof relative to: said. fixed arm member and. shaft to .;compensate for workieed variations and- Variations in cuttirag-loads.

EUGENE R. SANDERS; A

REFERENCES. CITED Thefollowing-references are of record imthe 40 file of this patent:-

UNITED STATES PATENTS Number Name Date:

2,171,024 Coates; Aug; 2.931939 2,247,183 Bour June:'2!1-;c1941