US2591206A

US2591206A - Cutting machine for brick, tile, and similar articles

Info

Publication number: US2591206A
Application number: US99147A
Authority: US
Inventors: George P Scott
Original assignee: EVEREADY BRIKSAW Co
Current assignee: EVEREADY BRIKSAW Co
Priority date: 1949-06-15
Filing date: 1949-06-15
Publication date: 1952-04-01
Anticipated expiration: 1969-04-01

Description

G. P. scoTT 2,591,206 CUTTING MACHINE FOR BRICK, TILE, AND SIMILAR ARTICLES Filed June 15' 1949 WIN I" iIlmmlll" H Hmmm ATTO NEy Patented Apr. 1, 1952 CUTTING MACHINE FOR BRICK, TILE, AND SIMILAR ARTICLES George P. Scott, Kansas City, Mo., assignor to vEveready Briksaw Company, Chicago, Ill., a corporation of Delaware Application June 15, 1949, Serial No. 99,147

This invention relates to Shop tools in the nature of cutting apparatus and more particularly masonry saws, the primary object being to provide control means disposed land operable to permit the user of the saw to swing the cutting element thereof to and from an operable position and to adjust kthe same as desired from an easy. accessible point, and through use of foot controls, leaving the hands free for other operations.

It is the most important object of the present invention to provide a `cutting machine for brick tile and the like haviiig .a swingable cutter head and a foot operated lever below the `head operably connected to the latter for swinging the same to and from a cutting position, the lever Yin turn being provided with a foot-operated pedal for releasably interconnecting the lever and the cutter head.

Another important object of the present in vention is to provide a cutting means having a head that is not only swingable but selectively movable vertically into `differing positions, the foot operated lever being so constructed and connected with the head as to facilitate such vertical movement of the head and also being provided `with a foot-control pedal for changing the relative interconnection between the lever and the head when vertical shifting of the latter takes place.

A further object of the present invention is to provide a masonry saw of the above mentioned kind having manually operable means cooperable with the foot control lever in holding the cutter head stationary and against swinging movement when desired.

Other more minor objects will be made clear or become apparent as the following specication progresses, reference being had to the accompanying drawing, wherein:

Fig. 1 is a side kperspective View of a cutting machine for brick tile and similar articles, made in accordance with the present invention, parts being broken away for clearness; and

Fig. 2 is a fragmentary, substantially central, vertical view taken through the cutting machine shown in Fig. 1.

In the drawing, a support includes a pair of front legs Il) and I2, and a pair of rear legs I4 and I6, the latter two of which extend upwardly into portions I8 and 2Il respectively,

rendering legs I4 and I6 appreiably longer than mounts a substantially Z-shaped lever 48.

5 Claims. (Cl. 125--13) devices of this character but forming no part of the present invention,

Tank 22 reciprocably mounts a table 24 carrying work 26 in a substantially horizontal path in the usual manner.

The extensions I8 and 2! of legs I4 and I'6 respectively, receive an elongated base 28 therebetween having a cross shaft 3i) intermediate the ends thereof and extending laterally beyond eachI longitudinal edge. The uppermost face of `the base Y28 mounts an electric motor 32 for driving a rotatable cutter disc `34 that is also carried by the base 28 above tank 22.

Each of the extensions I8 and 20 of legs I4 and It respectively, is providedwith a plurality `of` inclined notches .3S rotatably receiving the ends of the. shaft 32, thereby permitting swinging movement of .base 28 and all of its `carried parts as well as permittingbase 28 to be entirely removed and positioned in differing notches 36, depending upon the desired height oi disc 34 with respect to table 24. Obviously, the shaft 39 is positioned Vcentrally with respect to `the weight of base 28 and its component parts.

Base 28 has depending therefrom on one side of the pivoting shaft 30 opposite to cutter disc 34, an elongated arm 38. Arm 38 is pivoted to base 28 as at 4I) for 'free swinging movement relative to base 28. The arm 38 extends downwardly past the rearmost end of tank 22 and spaced therefrom and terminates above `the lowermost ends of legs I4 and I6 in substantial parallel relationship to the latter.

The legs IIJ, I 2, I 4 and I6 are braced. through the medium of a pair of

cross members

42 and 44 and a shaft 46 interconnecting the

braces

42 and 44 adjacent the legs I4 and I6 swingably Shaft 48 is mounted in hangers 5l] and 52 on

cross braces

42 and 44, respectively. Lever 4B is substantially U-shaped in cross section and has a bifurcated link 54 extending into that end thereof proximal to the arm 38.

The link 54 normally rests flatly against the under or lower face of the bight of channelshaped lever 43; and this link is pivoted to the lever by a cross pin 56 passing through the legs of lever 48 and the link 54. as shown in Fig. 2. A shock absorber comprises a bolt 58 passing through link 54 and a relatively large hole 55 formed in the bight of lever 48. A spring 64 is coiled about the bolt 5B with one end thereof bearing against the top of lever 48, while the opposite end bears against a washer 6I held in place by the head of bolt 58,

A nut 63 in screw threaded engagement with bolt 58 locks the latter in place with spring 60 tensioned as the operator may desire. A locking device includes a relatively short sleeve 62 through which arm 38 is slidably passed. The link 54 is bifurcated to straddle sleeve 62, and this bifurcated'link is pivotally connected to sleeve 62 through the medium of a pair of opposed stub pins 64.

The sleeve 62 is provided with a laterally-extending tube 66 having a reciprocable pin 68 therein that is shouldered as at 'I0 for receiving' one end of a spring '|2 within tube 66 and coiled about pin 68. Y

Spring 12 yieldably holds the pin 68 withinone of a plurality of openings 'I4 in the tube 38 in spaced relationship throughout a portion of the length thereof. That end of the lever 48 opposite to the arm 38 terminates adjacent the legs l0 and` l2 and has a foot pedal 'I6 pivotally secured thereto as at 18. Pedal 16 extends inwardly into the lever 48 a short distance between the pivotal point 18, thereby limiting the swinging movement of 4pedal |6 in one direction.

Pedal 16 is connected directly to the reciprocable pin 68 through the medium of a flexible cable 80. Cable 80 passes forwardly Within lever 48 and over a roller 82 in the substantially vertical portion of lever 48rearwardly of the pin 68. A fixture 84 mounted on the

cross braces

42 and 44 receives one end of a tension spring 86, the opposite end of spring 86 being connected with the lever 48 forwardly of the pedal through the medium of a hook 88.

Cross braces

42 and 44 also carry a depending stop 88 overlying the lever 48 for limiting the extent of upward movement thereof. A perforated bracket 82 depending from the tank 22 near the forwardmost end thereof ro- K tatably receives one end of an elongated rod 84 having a crank 86 disposed outwardly from bracket 82.

The opposite end of rod 84 is externally threaded and mounted within an internally tapped lug 88, also depending from the tank 22 adjacent the rearmost end thereof.

A substantially U-shaped clamp |00 embraces the arm 38 and has the bight thereof rotatably secured to the proximal end of the arm 84. Clamp |00 is provided with a lining |82 of heavy fabric 0.1 other resilient material.

Assuming the clamp |80 to be retracted out of engagement with the arm 38, the normal operation of the cutting machine is as follows:

With cutter disc .34 continually rotating by means of energization of motor 32, the operator reciprocates the table 24 with the work 26 thereonto and from a position in underlying relationship with respect to disc 34.

Disc 34 is swung to and from a position engagable with the work 26 by means 0f the lever 48, the operator using his foot to cause lever 48 to swing downwardly away from stop 80 and against the action of spring 86. As lever 48 pivots to shaft 46, the link 54, sleeve 62 and arm 38, will be caused to move upwardly, thereby tipping the base28 on its swinging axis 30 and moving disc 34 downwardlyV against work 26.

\ After the cutting operation is complete, the operator simply removes his foot from the lever 48 and spring 46 will return all parts to their original inoperative position. It is seen that since pedal 'I6 will swing in only one direction, downward pressing foot action thereon will in turn impart movement to lever 48.

When it is desired to change the position of pin 88 with'respect to the holes 74 in arm 38, the operator merely steadies the base 28 by grasping the forwardmost end thereof. He thereupon utilizes his toe in pulling upwardly on the pedal 'i6 to retract the pin 68 against the action of spring 12. When pedal 16 is thus actuated, the stop 80 will serve to prevent upward swinging movement of lever 48. With pin 68 held in a released position with respect to arm 38, the oper-V ator swings the base 28 manually to move the arm 38 within sleeve 62 to the desired position. Pedal 'i6 is thereupon released, permitting pin 68 to enter the opening 14 that is then in alignment therewith. Y

It is also simple and easy to change the position of base 28 with respect to the notches 36 in leg extensions I8 and 20. To make this change, the operator rst assures himself that the clamp |00 is suiiiciently clear of the arm 38. He then 4grasps the forwardmost end of the base 28 and simultaneously steps upon the pedal 16. Pulling of the base 28 forwardly and forcing the rearrnost end of base 218 upwardly by means of lever 48 will cause the shaft 30 to move out of notches 36 for positioning withinv the desired new position in other opposed notches 36.

serves to holdY all Oftentimes it may be desirable to operate the machine without the intermittent swinging movement of disc 34'and, therefore, the operator merely rotates the rod 94 by means of crank 96 to reciprocate rod 84 and move clamp |88 into tight engagement with arm 38. Lever 48 is first utilized in positioning the disc 34"at the desired height with respect to table 24 and thereupon, clamp |00 parts in such stationary position. g

It is lnow apparent that al1 adjustments can be made easily and quickly because the manually operable parts are positioned in a convenient place adjacent the front of the machine. The handsof the operator are left free to manipulate the table 24 or the base 28 since both lever 48 and the pedal 76 are foot-controlled.

The simplified construction is not only inexpensive to manufacture but is strong and is not subject to great wear. Accordingly, all the aims and objects initially set forth herein are fullyV satisfied by the cutting machine forming the subject matter hereof and it is, therefore, desired to be limited only by the spiritV of this invention as defined by the scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1.V A cutting machine of the character described comprising a swingably mounted cutter head; an elongated arm' extending from said head; amovable foot-operated lever spaced from said head; releasable means operably interconnecting Vsaid arm and said lever; structure on the lever having connection with said Vmeans for releasing the latter, said releasable means being shiftable relative to the arm when released and having parts selectively engageable with the arm at a plurality of spaced points thereon; and mechanism movable-toV and from a position engaging said arm for holding the head against swinging movement. Y

2. A cutting machine comprising a cutter head mounted for swinging movement on a substantially horizontal axis; a pivotally mounted arm depending from said' head on one side of its swinging axis; a swingable lever underlying said head;`

movable means releasably interconnecting said lever and said arm; and afcontrol member on said lever and swingable therewith, said control member being connected with said means for releasing the latter, and comprising a pedal shiftably secured to the lever subjacent said interconnection of the releasable means with the arm and the lever, for movement relative to the lever to and from a position moving said means to a released condition.

3. A cutting machine comprising a cutter head mounted for swinging movement on a substantially horizontal axis; a pivotally mounted arm depending from said head on one side of its swinging axis; a swingable lever underlying said head; movable means releasably interconnecting said lever and said arm; and a control member on said lever and swingable therewith, said control member comprising a pedal swingable on said lever` at one end thereof remote from said means and on an axis parallel with the swinging axis of the lever, and being connected with said means for moving and thereby releasing the latter as the pedal is swung on the lever toward one end of its path of travel.

4. A cutting machine comprising a swingably mounted head; an arm depending from said head and swingably secured thereto; a swingable lever underlying said head; locking means swingably secured to said lever at one end thereof and having movable parts for releasably securing the same to said arm; and a pedal swingably secured to the lever at the opposite end thereof and operably connected with said parts for releasing the same as the pedal is swung toward one end of its path of travel to move said parts, the swinging axes of said head, said arm, said lever, said locking means and said pedal all being substantially horizontal and relatively parallel.

5. A cutting machine comprising a swingably mounted head; an arm depending from said head and swingably secured thereto; a swingable lever underlying said head; locking means swingably secured to said lever at one end thereof and hav ing parts for releasably securing the same to said arm; a pedal swingably secured to the lever at the opposite end thereof and operably connected with said parts for releasing the same; and reciprocable means disposed between said head and said lever and movable to and from a position holding the head, the arm, the locking means and the lever against swinging movement.

GEORGE P. SCOTT.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Martini Nov. 21, 1939