US687691A - Automatic wiper for use in linotype-machines. - Google Patents

Description

N0. 687,69| Patented Nov. 26, l90l.

P. C. LAWLESS. AUTOMATIC WIPEB FOR USE IN LINUTYPE MACHINES.

Application filed May 16, 1901,)

(No Model.) '4 Shooter-Sheet I.

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Patented Nov. 26,190II.

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P. C. LAWLESS. AUTOMATIC WIPER FOR USE IN LINOTYPE MACHINES.

Application filed May'18, 1901.)

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(No Model.)

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No. 687,69]. Patented Nov. 26, l90l. P. C. LAWLESS. AUTOMATIC WIPER FOR USE IN LINDTYPE MACHINES.

Application filed May 16, 1901.)

4 Sheets-Sheet 3.

(No Model.)

' No. 687,69I. Patented Nov. 26, MIL

v P. c. 'LAWLESS.

AUTOMATIC WIPER FOR USE IN LINOTYPE MACHINES.

1 7 Application filed May 16, 1901.) (No Model.) 4 Sheets-Sheet 4.

Waxes fm/emlm" UNITED STATES I ATENT FFlCEt" PHILIP CHARLES LAWLESS, OF LONDON, ENGLAND.

AUTOMATIC WIPER FOR USE IN LlNOTYPE-IVIACHINES.

SPECIFICATION forming part of Letters Patent No. 687,691, dated November 26, 1901.

Application filed May 16, 1901. Serial No. 60,546. (No model.)

To all zuhopyjt,1nay concern:

Be it knowiithat I, PHILIP CHARLES LAW- LESS, of 188 Fleet street, in the city of London, England, have invented certain new and useful Improvements in Automatic Wipers for Use in Linotype-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in automatic wipers for use in linotype-machines, and has more particular reference to an automatic wiper for the mouthpiece of the metal-pot of the Mergenthaler linotype-machine, described in the specification of Letters Patent No. 436,532, of September 16, 1890. In that machine the mold in which the linotype is cast is a slot in and through a block which is made fast to a socalled mold-wheel, the length of the slot being parallel with a diameter of the wheel and its Width parallel with the wheels axis. One side of the mold-block presents itself to the rear of the mold-wheel, and it is up to that side that the metal-pot advances, making a metal-tight fit therewith and maintaining it, if not prevented, during the injection of metal into the mold, the metal-pot being withdrawn into its normal position after the linotype has been cast; but the metal-tight fit above mentioned is constantly being prevented. Thus the row of metal-ports in the mouthpiece frequently extend beyond the moldslot, and then the ports beyond the latter register with blank surface of the moldblock, when disks or splashes of metal will form over and around the mouths of these ports, or as the metal-pot moves back metal may trickle down the mouthpiece and set there. Such splashes and trickles, especially the latter, prevent the mouthpiece fitting metal-tight up to the mold-block the next time it moves up to the latter, so that when metal is then injected some of it will splash.

An automatic wiper similar to those for wiping the trimming-knives of the machine would probably have been applied to the mouthpiece above mentioned had it not been that Whereas the knife-wipers, act with a reciprocating linear motion derived from a source outside their plane of action the moldwheel has a rim or flange projecting from its edge in the direction of the mouthpiece for a distance very nearly equal to the travel of the latter, thereby practically inclosing the space between the mold-wheel and mouthpiece and shutting it off from outside agencies, and a wiper fast to the rear face of the moldwheel and projecting therefrom far enough to wipe the mouthpiece each time it passes it is impracticable, because it would be cut off by the fixed knife that trims the foot of the newly-cut linotype.

The present invention consists in a wiper for the mouthpiece of the metal-pot adapted to work Within the circle of the mold-wheel between the mouthpiece and the said wheel and actuated in one direction by the motion through a certain arc of a stud on the said wheel and in the other by the resilience of a spring and which resilience is generated by the said motion.

The essence of the invention resides in the provision of a mechanically-actuated wiper lying between the mold-disk and the mouth of the pot and adapted to act on the latter, this wiper having a motion independent of the mold-disk, so that it will not conflict in operation with other parts.

Referring to the accompanying drawings, which are to be taken as part of this specification and read therewith, Figure 1 is a rear elevation showing the mold-wheel holding its stud in contact with the wiper-arm and just about to start upon its first arcual motion; Fig. 2, a vertical section in the plane of the mold-wheel axis, including parts of the first elevator, vise-frame, metal-pot, and moldwheel slide and showing the wiper half-way along the metal-pot mouthpiece; Fig. 3, a

front elevation showing the wiper nearly at the end of its wiping motion along the metalpot mouthpiece, the dot-and-dash lines indicating the relative position of the mold-wheel; Fig. 4, a rear elevation, and Fig.5 a detail plan, together illustrating two modifications.

O is the newly-cast linotype; N, part of the head of the first elevator or yoke that carries the composed line of matrices and space bars; 0, the mold-wheel; 0, its axle, 0 the bearing of the latter; 0 an arm springing from the mold-wheel slide 0 to carrythe bearing 0 0 the mold-block; P, the abutment between which and the mold-block 0 the composed line above mentioned is clamped; V, part of the metal-pot, and t the mouthpiece of it.

The motions of the mold-wheel O and metalpot V of the Merganthaler linot'ype-machine are as follows: The mold-wheel O, holding its mold-block 0 at the top, moves toward the abutment P to clamp the composed line, and the metal-pot V moves forward till its mouthpiece '0 fits metal-tight against the rear face of the mold-block, whereupon metal is injected through the mouthpiece i; into the slot, thereby casting the linotype O. The mold-wheel 0 then moves in the direction indicated by the arrows in Figs. 1, 3, and 4 through an arc of two hundred and seventy degrees and stops for the linotype O to be ejected from the slot. It then moves through a quarter of a circle up into the first-mentioned position.

The above-mentioned parts and motions of the metal-pot and the mold-wheel are as heretofore.

1 is a spiral spring standing around the bearing 0 and having one end made fast to the arm 0 at 2, which serves it as a base independent of the rotary motion of the wheel 0.

3 is the wiper-arm. It is for the purpose of this invention a continuation of the other end of the spring 1 and radial to the axis of the mold-wheel O.

4 is the wiper, fixed upon the arm 3 by an y suitable means. It is of leather or other material or materials suitable for the purpose. So long as the wiper 4 is out of action the resilience of the spring 1 keeps it up to a buffer or cushion 5, fast on the slide 0 as shown in Figs. 1 and 4.

.6 isa stud fast to and projecting to the rear from the mold-wheel 0 far enough to engage the arm 3. This stud is so positioned upon the mold-wheel O and the arm 3 so shaped that it is in practical engagement with the latter at the moment when the moldwheel 0 starts upon its three-quarters-of-acircle motion, as shown in Figs. 1 and 4.

The action of the invention in wiping the mouthpieceo is as follows: The stud 6 pushes the wiper-arm 3 before it,"thereby making the wiper 4 wipe the face of the mouthpiece o. This action'of the stud and wiper is illustrated in Fig. 3. As soon as the wiper 3 has passed the mouthpiece 1), which happens when the stud 6 reaches the position indicated by dotted lines in Fig. 3, it becomes necessary to disengage the arm 3 from the stud 6 for the purpose of leaving the wiper free to be returned to its original position by the resilience of the spring 1 and to thereby wipe the mouthpiece a second time. The first or single wiping may suffice for a small mouthpiece; but the double wiping is preferred, as being more reliable than a single one. Two disengaging devices are illustrated, one in Figs. 1, 2, and 3 and the other in Figs. 4 and 5. The former device consists of a horn 7, fixed to the arm 0 and holding a cam-surface 8 in the path of the wiper-arm 3, the zero of this surface being to the front .of the said path and the maximum to the rear of it, so that as soon as the wiper 4 has passed the mouthpiece v the surface 8 pushes the wiper-arm 3 to the rear clear of the stud 6, the rise of the said surface and the llength of the stud 6 being proportioned produce that resultat the time stated, wh" eupon the resilience of'the spring 1 returns the wiper 4 to it its original position. The device illustrated in Figs. 4 and 5 consists in a combination of eccentricity of the spring 1 with an adjustable contact-piece on the wiper-arm 3 for the stud 6 to engage with. Its spring (marked 1 to distinguish it from the spring 1 in Figs. 1 to 3) is eccentric to the bearing 0 with its center below the axis of that hearing. This center may equally be above the said axis.

9 is the contact-piece above mentioned. It is adjustable lengthwise of the wiper-arm 3 by means of a set-screw 10. The respective paths of the stud 6 and the contact-piece 9 being eccentric to each in the way stated, the stud 6 moves up the side of the contact-piece 9 during the wiping action of the wiper 4 and off it at the moment the wiper 4 has passed the mouthpiece i7, whereupon the resilience of the spring 1 returns the wiper 4 to its original position. The radial length of the side of the contact-piece 9 is adjusted to keep the stud 6 in contact with it for the proper time. The reason why the contact-piece 9 is adjustable lengthwise of the arm 3 is the necessity of compensating for wear between it and the stud 6. Otherwise the contact-piece might be an enlargement of the arm 3 and fast to it.

The cam-surface 8, above described, may also be relied on to disengage the wiper-arm 3 when the spring is eccentric to the bearing 0 instead of the contact-piece 9, in which case its action will be as described above with reference to Figs. 1 to 3.

If the spring is concentric with the bearing 0 it may fit practically close to it, in which case the bearing 0 will serve as a support for it. Hence a concentric spring may be of thinner material than an eccentric one, asshown in the figures, because it has not to bear the weight of the arm 3, but has only to return the latter and the wiper 4. When the two are concentric, it is preferred that a thin ring 11 should be interposed to prevent friction between the coils of the spring and the bearing 0 to prevent the torsional strain on the arm 3 due to the contact of the wiper 4 and the mouthpiece U twisting the said arm and to steady the motion of the latter.

It is a matter of indifference whether the spring and wiper-arm are in one continuous piece or in two separate pieces joined together. They must be practically fast to each other in order that the first wiping motion of the arm may wind up the spring and the resili- IIO ence of the latter return the arm. Fig. 4

shows the former, and Figs. 1 to 3 the latter, construction. The junction between them may be effected by any suitable means. Referring to Figs. 1 to 3, advantage is taken of thepresence of the ring 1.1 to fasten the respective ends of the wiper-arm 3 andthe spring to it, 12 being an enlargement of the said end of the arm 3; 13, a tab or prolongation of the enlargement 12, the enlargement 12 having a hole to receive the outwardlyturned end 14 of the spring and both a groove which fits over the spring, and 15 15 screws passed through the tab 13 into the ring 11.

I claim 1. In alinotype-machine and in combination with its metal-pot and mold-wheel, a wiper for the mouth of the metal-pot, working within the circle of the mold-wheel, a stud on said Wheel to move the wiper in one direction, and a spring to move it in the reverse direction.

2. The combination with the metal-pot and the mold-Wheel of a linotype-machine, of a wiper for the mouthpiece of the metal-pot; an arm radial to the axis of the mold-wheel and carrying the said wiper on its outer end;

a spiral spring surrounding the bearing of the mold-wheel, fast by one end to a base independent of the rotary motion of the moldwheel and having the said arm practically fast to its other end; a stud on the mold- Wheel engaging the said arm to make the wiper Wipe the mouthpiece; and means for disengaging the said arm from the stud after the mouthpiece has been wiped and leaving it free to be returned to its original position by the resilience of the spring.

3. The combination with the metal-pot and mold-wheel of a linotype-machine, of a wiper for the mouthpiece of the metal-pot; an arm radial to the axis of the mold-wheel and carrying the said wiper on its outer end; a spiral spring surrounding the bearing of the moldwheel, fast by one end to a baseindependent of the rotary motion of the mold-wheel and having the arm practically fast to its other end; a stud on the mold-wheel engaging the arm to make the wiper wipe the mouthpiece; and a cam-surface for disengaging the arm from the stud as soon as it has been wiped and leaving it free to be returned toits original position by the resilience of the spring as soon as such wiping has been effected.

4. The combination with the metal-pot and the mold-wheel of a linotype-machine, of a wiper for the mouthpiece of the metal-pot; an arm radial to the axis of the mold-wheel and carrying the said wiper on its outer end;

a spiral spring surrounding the bearing of the mold-wheel eccentrically to the axis of it,

fast by one end to a base independent of the rotary motion of the mold-wheel and having the said arm practically fast to its other end; a contact-piece adjustable lengthwise of the arm; a stud on the mold-wheel to engage the said contact-piece to make the wiper wipe the mouthpiece and to leave it free to be returned to its original position by the resilience of the spring, as soon as such wiping has been effected.

5. The combination with the metal-pot and the mold-wheel of a linotype-machine, of a wiper for the mouthpiece of the metal-pot; an arm radial to the axis of the mold-wheel and carrying the said wiper on its outer end; a spiral spring surrounding the bearing of the mold-wheel eccentricall y to the axis of it, fast by one end to a base independent of the rotary motion of the mold-wheel and having the said-arm practically fast to its other end; a contactpiece on the arm; a stud on the moldwheel to engage the said contact -piece to make the wiper wipe the mouthpiece and to leave it free to be returned to its original position by the resilience of the spring, as soon as such wiping has been effected. 6. In a linotype-machine the combination of the pot-mouth, the wiper, the spring tending to move the wiper in one direction, and

a cooperating mold arranged to meet and to separate, in combination with a wiper mounted to travel across the front face of the potmouth, and mechanism to effect the to-andfro motion of the wiper while the pot and the mold are separated whereby foreign matters adhering to the pot-mouth are removed that it may close tightly against the mold.

In witness whereof I have hereunto set my hand in the presence of two Witnesses.

PHILIP CHARLES 'LAwLEss.

Witnesses:

OHAs. S. Wooncorn, HORACE GRELLIER.

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