US612249A

US612249A - Howard k

Info

Publication number: US612249A
Authority: US
Publication date: 1898-10-11
Anticipated expiration: 1915-10-11

Description

No. 612,249. Patented Oct. Il, |898. H. K. KING.

CUT-OFF MECHANISM FUR BRICK MACHlNES.

(Application iled Dec. 28, 189711.),

ino Model.) 2 sheets-sheet'l.

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No. 6|2,249. Patented Oct. Il, |898. H. K. KING.

CUT-oFF MEcHANlsM FUR BmcK MACHINES.

(Application filed :Dev:` 28, 1897.)

2 Sheets-Sheet 2.

(No Model.)

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Attorney.

Niinn STATES l PATENT OFFICE,

IIOIVARD K. KING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE CHAMBERS BROTHERS COMPANY, OF SAME PLACE.

CUT-OFF MECHANISIVI FOR BRICK-MACHINES.

SPECIFICATION forming part of Letters Patent No, 612,249, dated October 11, 1898 Application iiled December 28, 1897. Serial No. 663,828. (No model.)

.T0 @ZZ whom t 11m/y concern.-

Be it known that I, HOWARD K. KING, a citizen of the United States, and a resident of the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Cut-Off Mechanism for Brick-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, of which- Figure l, Sheet l, is a plan view, the tappet-casing being cut off. Fig. 2 is an elevation from the tappet-Wheel side, the tappetwheel and cam-case and frame having been removed. Fig. 3, Sheet 2, is a front end elevation, the casing being cut away. Fig. 4is an elevation, corresponding to Fig. 3, of a modification of the invention.

This invention relates more especially to the wire cut-off mechanism for brick-machines shown and described in Letters Patent of the United States- No. 362,204 to Cyrus Chambers, Jr., bearing date May 3, 1837. As will be seen by reference to the said patent, the tempered clay issues from a die of the machine in the form of a continuous bar, rectangular in cross-section, and is delivered y upon an endless belt E, termed the regulating-belt, and is severed into bricks of uniform size by means of a series of Wires mounted upon a rotatable wheel G, journaled above the moving bar of clay, which wheel is driven by the regulating-belt (through the movement of the clay bar resting thereupon) in conjunction with a positively-driven friction or helping beltjs, that passes over a tappetwheel J on the shaft of the cut-off Wheel, the movement or path of the cut-off wires being governed by a rotary cam J, against which the tappets of said tappet-Wheel consecutively bear in a manner to sever the bar of clay at right angles into brick lengths.

lThe object of my invention is to improve the construction of the cam and tappet-wheel mechanism, whereby certain advantages are secured over the said prior construction, as hereinafter explained.

Referring now to the drawings accompanying this speciiication and forming a part thereof, 1 designates the regulating-belt,which rcceives'the bar of clay 3 as it issues from the die of the brick-machine. (Not shown.) 4 is the rotatable'cut-oft wheel, mounted above the forward end of said belt upon a shaft 5,

that is journaled in bearings of a suitable supporting-frame 6. This wheel carries the cut-od wires '7, secured to the free ends of the limbs of U-shaped elastic bows 8, that are fastened to the radial arms 9 of said Wheel.

10 is the tappet-Wheel, mounted upon the shaft of the cut-off wheel and having adjacent to its periphery a series of laterally-projectin g tappets T T2.

ll is the cam for governing the movement of the cut-oft wheel, and thus the path of the cut-off wires, in cutting off the bar of clay through the tappets which bear upon the cam as it and tappet and cut-od wheels rotate, as

, hereinafter described. This cam is mounted uponl the shaft 12 of the forward pulley 13,

is a double-heart-shaped cam and the tappets are all on one side of the tappet-wheel. I substitute for this cam one of the approximately S shape shown in the accompanying drawings, which, however, I make in two similar parts or limbs in different vertical planes, one of which parts (marked lla) being to one side of the tappet-wheel, and the other (marked 1lb) to th'e opposite side, and I use an even number of tappets-usually six, as in the present instance-corresponding with the cut off wires, three of which tappets (marked T) are upon one side of the tappetwheel adapted to bear against the cam-limb 1l on that side and three (marked T2) on the opposite side of said Wheel to bear against the cam-limb llb and those of the one set alternating with those of the other set, as seen in Fig. l and shown by alternating full and dotted lines in Fig. 2.

l5 is the usual dust-proof casing for protecting the cam and tappet-wheel and for containing a quantity of oil, into which part of IOO the cam dips in its rotation, and thus the contact-surfaces of the latter and the tappets are lubricated.

The shape of the Working faces of the camlimbs is such, as shown, that as the cut-off wheel and the cam rotate in the direction of the arrows in Fig. 2 and a tappet, as one of the set T2, is bearing against a limb`of cam, as 1lb, and the corresponding cut-ott` device approaches the line where the complete severance of the clay will shortly occur (when the movement of the cut-ott wheel must be comparatively slow) the succeeding tappet, as of the set T, reaches the free end of the other cam-limb, as llf. At this instant both ot said tappets are bearing against the cam and both limbs of the latter are governing the movement of the cut-off Wheel; but as the cam and tappet-wheel continue their rotation the tappet T reaches a certain point, at about a, Fig. 2, of cam-limb ll, when the limb 1lb has left the preceding tappet, the bar of clay has been completely severed by the Wire corresponding to the latter tappet, and it is then necessary to govern the movement of the succeeding tappet T'-that is, in eitect, the cutoff Wheel-for the corresponding wire to begin the next cutting through the clay bar. It will, ot' course, be understood that the shape of the cam-limbs beyond the said point is such, as shown, as to effect the desired result.

In Fig. 2 of the drawings the view is taken at a time when the cut-oft' wire adjacent to or corresponding with a tappet l2 is approach ing the line or plane connecting the axes of the tappet-wheel and cut-of-wheel shaft 5 and the cam-shaft 12-that is, immediately before the cut-ott will be completed-at which time said tappet, as shown, is riding against the smaller diameter of the cam-limb 11b and the next following tappet T has ridden a short distance against the larger diameter of the other cam-limb lla.

By the form, construction, and arrangement of the cams and tappet shown and described I am enabled to so govern the cutott wheel as to cause the cut-ott wires to travel in substantial unison with the moving bar of clay not only during the actual cutting-off operation, but immediately after it has been completed and before the delivery of the brick to the more rapidly running ott-bearing belt described and shown in the said Chambers patent and indicated by the dotted lines 1G in Fig. 2 and shown broken off in Fig. 1 of the drawings of my improvement, and thereby the jump and blows that were incident to the operation of the prior cut off mechanism to which my improvement relates are-obviated and the parts are caused to work smoothly and uniformly.

Another and an important advantage of my improvement is that with a cut-,oft Wheel of a given diameter a much thicker bar of clay may be severed into rectangular brick lengths than was possible with said prior construction, for in the former the only limit to the diameter or sweep of the cam is that which shall permit the free ends of the cam in its rotation to clear the cut-off and tappet-wheel shaft 5, while in the prior construction the diameter of the cam was necessarily considerably more limited, as the length of the radius of the cam could not exceed the distance between the tappets.

By locating the tappets nearer to the line of the tappet-wheel shaft than are the cut-off wires I am enabled to secure the largest possible advantage of my improvement with a cam of the greatest possible diameter.

The construction of the invention may be modified without departing from the essential principle of its operation-for example, as illustrated in Fig. a of the drawings,where in one of the cam-limbs, 1l, is on one end of the shaft l2 and the other limb, 1lb, on the opposite end, and the tappet-wheel is practically in two parts, one of which, 10, is provided With the series of tappets T2 for the cam-limb 11b and the other part, 10, with the series of tappets T' for the limb llk It will be obvious that while the arrangement of these parts differs somewhat from that shown in the preceding figures of the drawings the mode of operation and result are the same.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The improvement in cut-off mechanism of the character recited, consisting of the combination of the rotatable cut-ott wheel, the rotatable cam of the form, substantially as shown and composed of two similar limbs in different planes, and a rotatable tappet- Wheel having an even number of tappets, one half of which are adapted to coact with one of said cam limbs, and the other half with the other cam -limb in alternate sequence, substantially as and for the purpose described.

2. The improvement in cut-off mechanism, of the character recited, consisting of the combination of the rotatable cut-oit wheel, the rotatable tappet-Wheel having an even number of equidistant tappets; one half thereof upon one side, the other half on the opposite side of the said tappet-wheel; those of the one side alternating with those of the other side and the rotatable cam of the form substantially as shown, and composed of two limbs with similar cam faces, in different planes and adapted to coact with said tappets in the manner described, substantially as and for the purpose set forth.

In testimony whereof I have hereunto affixed my signature this 16th day of December, A. D. 1897.

HOVARD K. KING.

Vitnesses:

WALTER C. PUsEY, JOSHUA PUsEY.

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