US810079A - Knife-wiper for linotypes. - Google Patents

Description

PATBNTED JAN. 16, 1906. P. A. PBTTIT. KNIFE WIPER FOR LINOTYPBS.

APPLICATION FILED APR. 6, 1905.

2 SHEETS-SHEET 1.

No. 810,079. PATBNTED JAN. 16, 1906. 1?. A. PETTIT.

KNIFE WIPER FOR LINOTYPES.

APPLICATION FILED APR. 6, 1995.

2 sums-sum 2. V

ll/iifnesses:

Invenifoz;

UNITED STATES PATENT orrion.

KNIFE-WIPER FOR LINOTYPES.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed April 6, 1905- Serial No. 254,135.

and which will have a positive five-inchstroke at all times or, more particularly speaking, to provide means when recasting a bold-face line thirty picas or five inches long for raising the knife-wiper its full distance, (five inches,) thereby permitting a five-inch slug to pass between the knives. This is effected while the first-elevator slide-recasting bankinglever is used to prevent the elevator from ascending so high as to let the bold-face characters drop into line with the Roman characters.

Third, to provide a knife-wiper that will not dull the knives nor be worn out by rubbing upon the knife-edges, and that is practically unbreakable, and that has no springs in connection therewith.

Without my improvement when recasting a mixed line the elevator is prevented from ascending to its usual height by the action of the said recasting banking-lever, and at such times the knife-wiper has a shorter stroke by fivesiXteenths of an inch. With my improvement the knife-wiper will always have a full five-inch stroke and a five-inch slug can pass between the knives.

I will now proceed to describe my invention, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation of the vise. the first elevator, and my improvements attached thereto, the elevator being in its normal position. Fig. 2 is a right-hand side elevation of the vise, the main part of the elevator, one of the knives, the knife-wiper, and its actuating parts, the right-hand lockingstud of the vise being broken away. Fig. 3 is an outside view of my knife-wiper. Fig. 4

is a detached perspective view of the knifewiper rod and the knife-wiper. Fig. 5 is a sectional detail, enlarged, taken on line a b of Fig. 2. Fig. 6 is a detail, enlarged, of the latch-pawl in elevated position. Fig. 7 is a sectional detail, enlarged, taken on line 0 (Z of Fi 2.

T is the vise or frame on which the first elevator is mounted. 2 is the first elevator.

3 and 4 are the slide-gibs, which guide the right-hand beveled edge of the elevator.

5 represents the front trimming -knives one of which is shown in Fig. 2 and both of which are shown in transverse section in Fig. 5. These are the knives which trim the ribs ofi the slugs as the slugs are forced between them by the ejector.

Fig. 4 is a perspective view of my improved wiper and the U-shaped rod by which it is actuated. The long straight portion 6 of this rod is supported by guides 7 and 8, which are secured, respectively, to the slide-gibs 3 and 4. Thusthe rod 6 is capable of a vertical reciprocating movement. Fixed on said rod are an upper collar12 and a lower collar 13. Secured to the elevator 2 is a bracket 14. (Shown in detail in Figs. 6 and 7 .1 The lower collar 13 is set at such a point that the bottom of thisbracket 14- will engage it, and thereby push down the rod 6 when the elevator descends. Mounted on the top of bracket 14 is a latch-pawl 15, which can be turned by the operator upon a pivot-pin 16 to either a horizontal or upright position. In Fig. 7 it is shown in horizontal or lowered position, and in Figs. 6 and 1 it is shown in upright or raised position. When in raised position, its end is five-sixteenths of an inch higher than its upper side when it is in lowered position, resting on its bracket 14. This will be understood by reference to Fig. 1 and the fact that the length of this pawl exceeds its width byjust the right amount to make the difference of five-sixteenths of an inch in its height in the two positions named. It is bifurcated, as shown in Figs. 6 and 7, so that it will not strike the rod 6 when lowered, but straddles it, as shown. One side and the end of the latchpawl 15 are adapted to engage the up per collar 12 on rod 6 when the elevator ascends. Thereby the rod 6 is given its upward stroke.

As shown in Figs. 1 and 4, the rod 6 is bent horizontally, forming a short portion 6, then upwardly, as shown at 6 then obliquely upward, as shown at 6 and finally straight up, as shown at 6 The wiper 16 is attached to the portion 6 in any suitable manner. He-

1 ferring to Fig. 5, the wiper has a main straight ICC portion 16, which is always in Contact with the knife-edges, and an inwardly-bent portion 16 the end of which is in contact with surface 17 of one of the knives. Said portion 16 has a downward extension 16 which is necessitated by the fact that the left-hand knife is a fraction of an inch shorter at the top than the right-hand knife. Thus the part 16 may pass above the left-hand knife, but the extension 16 will always touch the other. The rod at 6 is lightly pressed against the face of theleft-hand knife byits own resilience. The wiper 16 cannot bear very hard upon the knife-edges, owing to the contact of part 16 with the surface 17. Hence they will not be dulled thereby, and the wiper will not be cut by them. Both 'of these faults are noticeable with the old-style wipers.

.19 is the recasting bankingdever. It is fulcrumed on the lower side of the bottom gib 4. As is well known, the position of this lever determines the height to which the elevator 2 is raised. When this lever is thrown to one side, it shortens the upward stroke of the elevator 2 by five-sixteenths of an inch by throwing in a stop for a set-screw 20. Now, whenever this recasting banking-lever is used the operator turns down the latch-pawl 15. When the elevator 2 has moved up as far as it can go, it is obvious that collar 12 and rod 6 will be pushed up exactly as far as if the re casting banking-lever had not been used Therefore the knife-wiper will move up its full five inches, which is the obj cct for which the latch-pawl 15 is provided. When the recasting banking-lever is not used, the latchpawl 15 is turned up, which is its normal position. In other words, the latch-pawl is never lowered unless the operator is recasting a thirty-pica or five-inch black-letter line.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a linotype-machine, in combination with the first elevator, a vertically-movable knife-wiper rod, a knife-wiper, and means, carried by said elevator, and controllable by the operator, for raising the stroke of the knife-wiper when recasting mixed five-inch slugs; substantially as described.

2. In a linotype-machine, in combination with the first elevator, a vertically-movable knife-wiper rod, a knife-wiper, two projections carried by said rod, a pawl carried by the elevator and movable by the operator, for engaging the upper projection and lifting said wiper-rod to a greater or less height; substantially as described.

3. In a linotype-machine, in combination with the first elevator, a vertically-movable knife-wiper rod, guides for said rod, said guides being stationary with respect to the elevator, an upper collar and a lower collar fixed upon said rod, a bracket carried by the elevator and adapted to depress the lower collar, and a pawl pivoted on said. bracket and capable of lifting the upper collar to a greater or less height, depending on the po sition of the pawl; substantially as described.

4. In a linotype-machine, in combination with the front trimming-knives; a knife-wiper having a portion 16 which engages the edges of the knives, and having a bent portion 16 which touches the outer face of one of the knives; substantially as described.

5. In a linotype-machine, in combination with the front trimming-knives, a knife-wiper having a bent portion 16 which touches the outer face of one of the knives, and having a downwardly-projecting portion 16 substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

FRANK A. PETTIT.

WVitnesses:

K. M. IMBODEN, R. E. HAMILTON.

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