US707276A - Brick-machine. - Google Patents

Description

No. 707,276. Patented Aug. l9, I902.

W. F. STIMPSUN.

BRICK MACHINE.

{Applicatiqn filed June 25, 1901.)

(No Model.) 2 Sheets$heet l.

Patented Aug. I9, I902.

. W. F. ST|MPSON.-

BRICK MACHINE. Ap lication filed June 25, 1901.

2 Sheets-Sheet 2.

(No Model.)

THE "cams PETERS co, PHGTQUTHQ. WASHINGTON, I). c.

UNITED STATES PATENT OFFICE.

.WAIJTER F. STIMPSON, OF DETROIT, MIGHIGAN.

BRICK-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 707,276, dated August 19, 1902.

Application filed June 25, 1901. Serial No. 66,911. (No'modeL) 7 To a, whom it may concern:

Be it known thatrI, WALTER F. STIMPsoN,

a citizen of the United States, residing at De troit, in the county ofiWayn'e-and State of Michigan, have invented certainnew and use ful Improvements in Brick-Machines,of which the following is a specification, reference be: ing had therein to the accompanying drawings.

The invention relates to brick-machines of that type in which a column of clay of suitable length isfed upon a cutting-table, which latter travels with the clay column during the period of cutting and is then returned to its initial position to receive another length of clay.

The present invention relates more particularly to the mechanism employed for propelling the cutting t-able during its forward movement and for locking .sai'd table after it has been returned; further, in the peculiar construction of the tripping mechanism, whereby the actuating mechanism carried by the table is first set in operation and is subsequently arrested after the completion of a out.

With these objects in view the invention consists in the construction as hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of a brick-machine to which'the improvementsare applied. Fig. 2 is a plan View thereof, showing the table diagrammatically. Fig. 3 is a cross-section through the cuttingtable, showing the cutter and its actuating mechanism. Fig. 4 is an enlarged view. of a portion of Fig. 3. Fig.- 5 is aside elevation of the parts shown inFigJi. Fig. 6 is a side elevation of a portion of Fig. v1 on an enlarged Fig. 7 is a cross-section on line 00 to,

movement of the clay column-rbythe combined frictional drive of the column of clay upon said .table and by a mechanical connection with the segmental gear-wheel O. The latter comprises anarm H, which is pivotally connected at one end to the table E and at its opposite end is provided with a rackbar-I, adapted to engage with the segmental 6o gear 0. For disengaging the rack from said gear to permit-of the returning of the table the pin or lug J, projecting from said gear,

is adapted at the completion of the forward movement of the table to engage with a flange K upon the arm H and to raise the latter, so

as to disengage the rack from the gear-teeth. The rack is held out of engagementwiththe gear during the return movement of the carriage and after the disengagement of the pin J from the flangeK by means of the smooth peripheral flange L, whichcompletes the circuit of the segmental gear.

The return movement of the table is ef= fected by connection with drive mechanism independent of the clay column, which connection is effected by a clutch thrown into engagement at the completion of the forward movement of the table. The particular construction of the mechanism employed for this purpose forms no part of the present invention, but is indicated as comprising a crank M upon the driven shaft N, which is con-v nected by a rod 0 with the'table, The crank M is loosely sleevedupon the shaft N, but periodicallyis' coupled thereto by a clutch P, adapted to be tripped by a projection upon the table E.

As the return movement of the table may be accomplished in less time than necessary for the feeding thereon of the clay column,

it is desirable to provide meansfor locking said table in its return position until it is again to be fed forward. This locking is ef- I fected by an arm Q, hinged at one end of the frame D and provided at its free end with a roll R. In the normal position of the arm Q this roll projects into the path of the rack-bar I, while the latter is held by the flange L out of engagement with the seg- 10o mental gear. The arm H and the table are thus held from moving forward until in the rotation of the gear 0 it again comes into registration with said rack and the latter falls into mesh. In falling the rack I will drop below the center of the roll R, so that in moving forward said roll will mount upon the upper plain surface of the rack-bar and will not interfere with the movement thereof. In the return movement of the table the roll will remain above the rack-bar until the latter reaches its initial position, when said roll will drop into a position to again lock the bar.

In the initial forward movement of the table a considerable strain will be exerted upon that tooth of the rack-bar I which first drops into engagement with the segmental gear. To avoid danger of breaking, this tooth is therefore made of considerably greater width than the succeeding teeth, while the segmental gear is provided with a correspondingly-wider recess to receive the tooth.

The cutter carried by the table E is thrown into action during the forward movement of said table and completes its operation before the return movement. Heretofore constructions have been devised in which the cutter is started into action immediately upon the forward movement of the table. Such an arrangement is objectionable, for the inertia of the table may cause a slight sliding of the clay column thereon in the initial movement, and where the cutter begins its action immediately the result would be that the cut would not be straight. In the present construction the table must move a short distance before the cross-cutter is started, and, furthermore, the tripping or starting of the cutter-actuating mechanism is directly effected by the movement of said tables.

In the construction shown in the drawings the cutter comprises a rock-frame S, secured to a longitudinal rock-shaft S and provided with a series of radially-extending cuttingwires S attached to longitudinal bars S and S on said frame. This rock-frame is reciprocated by the connecting-bar T, having a traveling engagement with the longitudinal bar S of the frame and at its opposite end connected to a crank U. The throw of the crank is sufficient to impart the requisite movement to the cutters S in one half-revolution of the crank. The drive mechanism comprises a shaft U, uponwhich the crank U is mounted, a gear-wheel U thereon, and a pinion W, meshing with said gear and mounted upon the shaft W. The latter is constantly driven and has a beveled-gear connection W with the shaft N for imparting movement to the latter. The pinion W is, however, normally loose upon the shaft W and is only periodically coupled therewith by a clutch W This clutch may be of any suitable construction, but as shown comprises a dog a, pivoted to the pinion W and having one end 6 adapted to project into the path of a series of pins 0 on the head (1, fixedly secured to the shaft W.

e is an arm of the dog a, adapted to bear against the hub f on the pinion, and thereby limit the outward movement of the arm I).

g is a spring for holding the arm e against the hub f.

h is an arm of the dog a, projecting out beyond the periphery of the pinion and forming a tripping and stop arm for the clutch.

With the arrangement of parts as above described whenever the tripping-arm h is freed the spring g will throw the dog into a position where the arm I) will extend into the path of the pin a, and thus in the rotation of the head d one of said pins will contact with the dog and cause the rotation of the pinion W. If, however, the arm h is arrested in its movement by striking against the stop, the dog a will be rocked upon its pivot against the tension of the spring 9 until the arm Z) is withdrawn from the path of the pin 0, thereby disengaging the clutch.

With the clutch constructed as above described it is evident that the coupling or uncoupling of the pinion W to the shaft W is dependent upon the withdrawal or replacement of the stop in the path of the arm h. In order that the coupling may be effected after inertia of the cutting-table has been overcome, the stop for the clutch is directly connected to said table. As shown in Figs. 4 and 5, this stop comprises a flange X, secured to the frame of the cutting-table and projecting downward adjacent to the clutch W. This flange has two portions 2' and j, ar-. ranged in slightly-diiferent planes, but parallel to each other and to the plane of movement of the table. The portion 1; is arranged to be in the path of the arm h when the table is in its initial position-2'. 6., before starting in its forward movement. It is also arranged so that a comparatively slight movement of said table will withdraw the flange from the path of the arm h, permitting the clutch to automatically couple,and thereby starting the cutting mechanism. As before described, the movement of the cutters is caused bya halfrevolution of the crank U, which through the medium of the connecting-rod T rocks the frame S from one side to the other of the cutting-table. In order to arrest the movement of the cutter, it is necessary that a stop be placed in the path of the arm h, so as to trip said arm and disengage the clutch W. This stop is formed by a flange j, which is arranged in rear of the flange 'i, and in the forward movement of the table will travel across the path of the arm h. Thus when the pinion W has nearly completed one revolution the arm h will strike against the flange j, causing the rocking of the dog a and the withdrawal of the arm I) from the path of the pins 0, thereby arresting further movement of the pinion. The pinion W and the gear-wheel U being in the ratio of one to two, the latter will move through but 0ne-ha1f revolution to a full revolution of the pinion. After the clutch has been thus disengaged the arm h will remain in contact with the flange j during the remainder of the forward movement of the table and also during the return movethe latter, but still holding the dog a from engagement with the pins 0.

It will thus be understood that the flange X performs the double function of releasing the clutch in the initial movement of the table to cause the startingof the cutting mechanism, and, second, the tripping of said clutch after thecompletion of movement'of said cut-' ter and holdingit in its tripped position dur ing the return movement of the table. For

convenience in casting, theflanges t' and Y jare slightly separated from each other to form a space It between, and the arm h is provided with an enlarged head Z, adapted to bridge said space is. This arrangement is, however,

not necessary, asthe flanges i and j maybe made to slightly overlap each other.- The planes of the two flanges are separated sufficiently to permit the head Z to pass behind the flange j when it is disengaged from the the reciprocating cutting-table, the cutter Asthe present invention relates to the features above described, I deem it unnecessary to further describe the structure of the machine or to give the complete operation thereof. a

What I claim as my invention-is 1. In a brick-machine,the combination with the reciprocating cutting-table, the cutter mechanism and a rotary driver therefor, of a clutch forautomaticallyrcoupling said driver to said cutter mechanism, and havinga projecting tripping-finger, and a member carried by said table projecting i'ntothe path of said tripping-flngerto form a stop for disengaging said clutch, said member being cut away at one point to permit of the disengagement of said finger therefrom in the initial movementof said table. a

2. In a brick-machine, the combination with mechanism and a rotary driver therefor, of a clutch for automatically coupling said driver to said cutting mechanism and having a projecting tripping-finger, a member carried by said table projecting into the path of said tripping-finger to form a stop for disengaging said clutch, said member being cut away to permit of the disengagement of said trippingfinger in the initial movement of said table and having a portion for arrestingsaid tripping-finger after'the completion of the cut and for maintaining it in its tripped position during the return movement of the table.

3. In abrick-machine, the combination with the reciprocating cutter table, the cutter mechanism and a rotary driver therefor, of a clutch for automatically coupling said cutter mechanism to said driver, and having a projecting tripping-finger, a member secured to said table comprising two flanges arranged to extend parallel to the plane of movement but in separate planes, one-of said flanges forminga stop for said finger in the initial position of said table, and adapted to release the same in the initial forward movement, and the other flangebeing adapted to rearrest said finger after the completion of the cut, and to guide the same into reugagement with said, first flange in the return movement of said table.

4. In a brick-machine, the combination with a cutting-table, and a drive mechanism therefor deriving its movement from the traveling column of clay, of a segmental gear connected with said drive mechanism and a rack-bar connected with said table for engaging with said'gear-wheel, said rack-bar having an enlarged forward tooth adapted to first drop into engagement with said gear-wheel.

5. In a brick-machine, the combination with a cutting-table and a forward drive mechanism therefor deriving its movement from the traveling column of clay, of a segmental gearwheel connected with said drive mechanism, a rack-bar connected to said table adapted to drop into mesh with said'segmental gearwheel when brought in registration therewith, a hinged stop-arm adjacent to said rack and a roll upon said arm forming a stop for said rack and adapted when the latter falls in mesh to ride over the upper face thereof until said table is returned.

In testimony whereof I affix my signature" 100 in presence of two witnesses.

WALTER F. STIMPSON.

Witnesses:

M. B. ODOGHERTY, H. 0. SMITH.

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