US530732A - Excelsior-cutting machine - Google Patents

Description

(No Model.)

0. G. SMITH.

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EXGELSIOR CUTTING MACHINE.

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C. G. SMITH. EXGELSIOR' CUTTING MACHINE. No. 580,732. Patented Dec. 11, 1894.

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'EXOELSIOB, CUTTING MACHINE.

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UNITED STATES,

PATENT OFFICE.

CHARLES e. SMITH, OF DETROIT, MICHIGAN.

EXCELSIOR-CUT TING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 530,732, dated December 1 1, 1 894. Application filed April 29, 1891. Renewed Jniie 18, 1894. Serial No. 514,992. (No model.)

Detroit, in the county of Wayne and State of Michigan, have invented new and useful Iniprovements in Excelsior-Cutting Machines; and I hereby declare that the following is a full, clear, and exact description thereof, ref-' erence being had to the accompanying draw lugs, which form a part of this specification. My Invention relates to improvements in that class of excelsior cutting machines, in

which the slitting and shaving knives are set in a reciprocating frame or sash, in such a manner as to out several layers of excelsior at each reciprocation of the knife frame.

The objects of myinventiou are, first to provide means for slitting the face of the block into narrow strips; second, to provide means for cutting several shavings or layers ofexcelsior, from the block at every reciprocation of the knife frame; third,to provide means to feed the block to the cutting knives; and it consists in the form and arrangement of the slitting knives, in connection with each other, and their relation to the shaving knives; in the form and arrangementof the shaving knives or planes in theknife frame; and in the means for feeding the block to be cut to the knives, and in the peculiar combination, construction and arrangement of the several parts as hereinafter more particularly set forth and claimed.

Figure 1,is a side elevation of my excelsior cutting machine. Fig. 2, is an'enlarged view of the ratchet feed on the line :12-00 in Fig. 1.

Fig. 3, is a plan view of the feed table. Fig. 4, is a side elevation of the knee on the feed table. Fig. 5 is a plan view of the knee on the feed table. Fig. 6 is a horizontal section of the slitting knife bar. Fig. 7 is a vertical section of one side of the shaving knife frame. Fig. 8, is a plan view of a modification of the dogs. Fig. 9 is a side elevation of the feed table and a modification of the dogs. Fig. 10, is a section through the feed table at the line :cw in Fig. 1. Fig. 11, is a rear view of the slitting knife bar detached from the knife frame. his .12, is a perspective view of my' excelsior cutting machine.

In the drawings A A represent the standiards of the main frame, which are connected and held together by suitable cross ties or girths, or by other suitable means.

a a, are ribs on the inner sides of the stand- ,ards A A forming with the steps ct a the studs or ways a a in which the knife frame ;:or sash B reciprocates.

a a are studs projecting from the inner side of the main standards which are tapped for the reception of the set screws 0. a which hold the steps a a in position, and by which any wear in the slides a o is taken up, and the cutting knife'frame always kept in proper relation to the feed plate, to insure the proper cut of the knives.

a is a set screw through a slot in the standard A and screwed into the steps a a to secure them to the standard A.

BB' are the side posts of the knife frame or sash B, which are held together by proper girths or cross-pieces.

bb b are inclined recesses in the posts B in which the knives or plane irons D are set, and held in place by the set screws b b.

d d are square shoulders on the ends of the knives D, which are inserted in the recesses b b in the posts of the knife frame. The knife blade between the shoulders is beveled on the lower side and ground to a sharp cutting edge.

d d are gage blocks placed in the inclined recesses 17 b in the post B, under the shoulders d d of the knife blades, to regulate the thickness of the cut from the block, the difference in the depth of any two consecutive sets of gage blocks, being the thickness of the desired cut of the excelsior.

,F is a bar horizontally slotted andcarrying the slitting knives G and the'spacing blocks g between the slitting knives. A recess is cut in each endof the bar F on its inner side forming the shoulder f and the arm f which is perforated for the passage of the'screws or bolts by which the bar F is secured to the post B. p The slitting knives and the spacing blocks are inserted alternately in the slot f and secured in place by the set screw f 3 tapped through the shoulder f or in any other convenient manner.

F is a plate on the back of the bar F covering the slot f and secured to the bar by proper screws or bolts, and supporting the slitting knives against the pressure of the block while cutting.

Vhenever it becomes necessary to remove any of the slitting knives it can be readily and quickly done by removing the plate F and loosening the set screw f H is a bar sliding in the vertical ways I' I on the outer side of the standard A, and actuated by the pitman J, which is reciprocated by an eccentric on the driving shaft of the main pitman of the machine.

K is a pawl jointed to the bar H in any suitable way, which engages with the ratchet wheel L causing it to rotate during the downward stroke of the bar H. The ratchet wheel L is keyed onto the end of the shaft R.

A A are the standards or supports of the table M, which is in rear of the standards A A and carries the feed mechanism.

N is a bracket bolted on the side of the standards A and A and forms a journal bearing 11 for the shaft R.

N is a bracket bolted on the side of the standard A at its rear edge and forms a j ournal bearing n for the shaft R.

n is a cap of the journal box it from which two standards a n arise, which are perforated to form journal bearing a n for the rock-shaft O.

0 is an arm at the outer end of the rockshaft 0 to which one end of the coiled spring is is attached. The other end of this spring is attached to the pawl K and holds itin contact with the ratchet wheel L while the block to be cut is fed forward. 0 is an arm of the rock-shaft 0, extending downward and en gaging with the set lever P.

0 is an arm or lever of the rock-shaft extending outward and serves as a hand lever for operating the rock-shaft when necessary.

The ratchet wheel L is keyed on the front end and the gear-wheel S on and near the rear end of the shaft R.

S is a gear wheel pivoted on the axle s and serves to convey motion from the wheel S to the gear wheel S which drives the screw feed shaft T.

M is a standard arising from the center of the table M at its rear end, which is cored out to receive the hub V, which is internally screw threaded to receive the feed shaft T, and is rotated by the wheel S which is firmly attached to it.

U is a guide or way in which the feed carriage reciprocates. u is the base of the slide, and u a are the projecting edges of the way, under which the hooked foot y of the feed carriage Y catches.

Y is the feed carriage or plate, propelled by the feed shaft T which is connected to it by the swivel joint 25. This carriage is provided with the overhanging hooks y which extend below and under the overhanging ledges it u of the carriage guide or way and hold the carriage down to the table.

Yisa standard or plate projecting upward from the upper surface of the feed carriage, and supports the plateY which extends across the front edge of the feed carriage. 'y 'y are vertical slots in the edge of the plate Y in which the studs 5 on the dog Z travel.

Z is a dog for holding the block to be cut, and is provided with the teeth or serrations z for that purpose. This dog is raised and lowered by the lever E which is pivoted to the standard Y at e and is slotted at its outer end to engage with the pin 2 on the dog Z.

1-1 is a rack on the rear edge of the standard Y with which the spring bolt h attached to the lever E engages to hold the dog Z down on the block.

W is a stopon the sides of the carriage Y. which releases the lever P whenever the feed table reaches its limit.

P is a lever pivoted to the table M at p provided with the recess 10 and the shoulder 19 on one side. When the machine is in operation the arm 0' of i the rockshaft O rests against the shoulder 13 and holds the spring and the pawl K against the ratchet wheel L, causing the pawl to engage with the notches or ratchets on the wheel at every reciprocation of the bar H. When the stop W on the feed carriage comes in contact with the lever P the opposite arm of the lever is forced outward and the shoulder 19 releases the arm 0' and allows the rock-shaft to rock on its journals. This releases the tension of the spring 70 and that permits the pawl K to leave the ratchet wheel L, which ceases to rotate, and the forward movement of the feed carriage is arrested.

0 is a balance wheel on the extreme rear end of the shaft R, provided with the handle c by which the operator turns the wheel backward and gigs back the feed table from the cutting frame, to allow of the insertion of a new block to be cut. If required it may also be used to feed the block forward by hand.

Figs. 8 and 9 show a modification of the feeding device or knee, in which Y is the feed carriage, propelled by the feed shaft T, which is connected with it by the swivel joint 15. This carriage is provided with the overhanging hooked foot 1 which extends below and under the overhanging ledges a a of the carriage slide or way and holds the carriage down to the table.

Y is a standard or plate projecting upward from the upper surface of the feed carriage, and supports the plate Y which extends partially across the front of the feed carriage and supports the block against the cutting knives.

y g are horizontal recesses cut in the sides of the plate Y at a point just above the center of its height.

Y is a plate extending across the rear end of the feed carriage having at its foot and in the center the boss 11* which is cored out for the reception of the front end of the screw shaft T,to which it is connected by a swivel joint.

g is a boss at the center of the upper edge IIO of the plate Y to which the curved levers Z is pivoted to the standard or plate Y at or on the boss Y. A toothed rack H projects 'from the plate Y opposite the boss y with which a catch from the lever E engages, to lock the lever E when the dogs on the curved levers are inserted in the block to be cut.

Y is a boss on the center of the plate Y which is cored out and internally screw threaded for the reception of the screw E 6 is a hand wheel on the top of the screw, by which it is turned up or down.

e is a button on the screw head which projects far enough over the side of the plate Y to come in contact with the top of the block, which is shown at B What I claim as my invention is- 1. In an excelsior cutting machine, the combination of the main frame A with the table M the ways I in which the bar H recipr0- wheel L, the ratchet wheel L rotated by the pawl, spring k to keep the pawl in contact with the ratchet wheel, and the rock-shaft O to which the spring is is attached by which the pawl K is held in contact with or released from the ratchet wheel L and the feed table Y and the mechanism through which motion is communicated thereto, all substantially as described.

2. In an excelsior cutting machine the combination of the main frame A with the table M the ways I in which the bar H reciprocates, the bar H reciprocated by the pitman actuated by any proper mechanism on the main driving shaft, and carrying the pawl K, the pawl K to engage with the ratchet wheel L, the ratchet wheel rotated by the pawl K, the spring to keep the pawl in contact with the ratchet wheel, the rock-shaft O, to an arm of which the spring is is attached, the set lever P which engages with an arm of the rockshaft 0, and the stop W on thefeed carriage, the feed carriage and the mechanism through which motion is communicated thereto, all substantially as described. I

3. In an excelsior cutting machine, the combination of the main frame A with the ways I in which the bar H reciprocates, the bar H reciprocated by a pitman actuated by any proper mechanism on the main driving shaft, and carrying the pawl K, the pawl K to engage with the ratchet wheel L, the ratchet wheel L keyed onto the shaft R, the mechanism to communicate motion from the shaft R to the screw feed shaftT, the screw feed shaft T and the feed table Y, and the mechanism by which the pawl K is held in contact with and released from the ratchet wheel L all sub stantially as described. 4. In an excelsior cutting machine the combination of the main frame A, with the ways I in which the bar H reciprocates, the bar H carrying the pawl K, the pawl K to engage with the ratchet wheel L, the ratchet wheel L keyed onto the shaft R, the mechanism to convey motion from the screw feed shaft T, the screw feed shaft T propelling the feed table Y, the feed table Y sliding on the ways on the table M, the stop W on the feed table Y, to engage with the set lever P, the set lever P, actuating the arm 0 of the rock-shaft O, the rock-shaft 0 provided with the arms 0 and o and the spring 70 connecting the arm 0 of the rock-shaft O, with the pawl K, all sub stantially as described.

5. In an excelsior cutting machine, the combination of the main frame carrying the cutting knives, with the table M, supporting the feed mechanism, the way U on the table M, provided with the over-hanging ledges u u,

the feed carriage Y provided with the hooked foot Y, which catches under the ledges u u, the standard Y and plate Y the slots y y in the standard Y to receive the studs 2 on the dog Z, the dog Z, provided with the studs 2 and actuated by the lever E and the lever E, pivoted to the standard Y and locked in place by suitable mechanism, all substantially as described. 6. In an excelsior cutting machinethe combination of the parts of the knife frame provided with the inclined recesses, with the cutting knives, the set screws for retaining the knives in place, and the gage blocks for regulating the cut of the knives, all substantially as described.

7. In an excelsior cutting machine, the combination of the parts of the knife frame provided with the inclined recesses for the reception of the cutting knives and the horizontal recesses for the slitting bar, the slitting bar carrying the slitting knives, the cutting knives inserted in the inclined recesses,

the meansfor holding them in recesses, and

CHARLES G. SMITH.

Witnesses:

E. O. PRYOR, W. A. BELL.

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