US1317761A - George a - Google Patents

Description

G. A. SEIB.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 10. 1919..

Patented Oct. 7, 1919.

H|5 ATHIIRNEY GEORGE A. SEIB, F ILION, NEW YORK, ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITIN G MACHINE.

Specification of Lettersfatent.

Patented Oct. 7, 1919.

Application filed April 10, 1919. Serial No. 288,971.

To all whom it may concern:

Be it known that I, GEORGE A. SEIB, citizen of the United States, and resident of Ilion, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My present invention relates to improvements in stop devices for typewriting machines, and its main object is to provide stop devices that minimize noise and that are especially adapted to a case shifting mechanism, reducing to a minimum the noise incident to case shifting. More specifically stated, the object of the invention is to improve the sto mechanism disclosed in my prior Patent 0. 1,203,061, granted October 31, 1916.

To the above and other ends my invention consists in the features of construction, cornbinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the accompanying drawings my invention is illustrated as applied to one style of Monarch typewriting machine.

Figure 1 is a fragmentary front elevation of the shiftable type bar segment of said Monarch machine, together with the sup porting and guiding posts and assoc ate parts, my improved stop devlces being mounted on said posts.

F 1g. 2 is a fragmentary rear elevation of some of the parts shown in Fig. 1, the segment, however, being shown in its shifted or upper case position.

'Fig. 3 is a perspective view of one of the posts or uprights and associate parts.

Fig. 4 is a horizontal sectional view taken on a plane indicated by the dotted line wa: in Fig. 1 and looking downward. k

Rising from the sides of the base portion 1 of the main frame of the machine are posts or uprights 2 that support and guide a sh ftable type bar segment 3, connected to whlch are arms or links 4 that are controlled by key operated shifting devices not shown hereln but which may be of the usual construction. When in its upper position as shown in Fig. 1 the segment is adapted to write lower case characters, and when shifted downward the Fig. 2 or lower position said segment is adapted to write upper case characters, but the direction of shift from one case position to the other may be reversed as in some later styles of Monarch machines. Fixed to the posts 2 are grooved trackways 5, opposite to which are grooved trackways 6 that are fixed to the segment 3. Sets of anti-friction balls 7 are arranged in the associate trackways and furnish bearings for the shiftable seament 3, each set of balls being provided with a separator 8 interposed between the trackways 5 and 6.

The up and down shifting movements of the segment 3 along the fixed guiding and supporting devices 2, 5, are limited by stop devices comprising at each side of the segment an upper lug or stop 9 and a lower lug or stop 10, both fixed to and projecting rearward from the back of the segment. The stops 9 and 10 at each side of the segment cooperate with stop devices which are the particular subject-matter of my present invention, said devices being adj ustably secured in pairs to the rear faces of the osts 2. Each pair comprises novel StOPdGVlCBS 11 and 12 which are essentially alike and which replace the split stops of my said prior atent. Said stop devices 11 and 12 are at plates or fingers which may be of sheet metal, each pair being arran ed face to face and parallel with each other, "heir ends being oppositely inclined or bent towards each other, as indicated at 11 and 12*. Said inclined portions provide stops proper which cooperate with the correspondingl inclined faces of the movable stops 9 and lO to arrest the segment and thus limit relative movement between the case shift parts. Each of the stop devices 11 and 12 is slidably seated or fitted edgewise in a horizontal seat or slot 13 that is formed or cut in the back of one of the posts 2. There are two of these slots or kerfs 1n each post, one above the other and parallel. The depths of the slots 13 are such that the fingers 11 and 12 extend widthwise only part way into the slots, the fingers being considerably wider than the depth of the slots and accordingly projecting rearward a considerable distance outside the rear walls or vertical faces of the posts 2. In order to hold the stop devices 11 and 12 securely in place, binding plates or cross straps 14 are arranged transversely of the stop devices and in frictional engagement with their edges, said cross straps extending vertically and each being secured in place by a pair of headed screws 15. The construction is such able extent. The construction reduces the noise and yet the segment settles so quickly into place that the alinement of the types is not materially affected. Since the metal of .which the stop devices are constructed is sheet stock, the contact faces are made considerably broader than the contact faces of the prior split stops which they replace,

' more stock being needed to give the resistance necessary to avoid bending under the impact or blow of the associate segment stop.

In adjusting my novel stops 1t is necessary only to loosen slightly the screw 15 adjacent the particular stop that requires repositioning, which stop may then be slid along into the desired position by gently tapping it, the friction due to the binding plate or crossstrap always restraining the stop finger from undue movement during such re-positioning. The binding effect of the companion screw on the companion stop, actingthr'ough the cross strap, is sufficientto prevent any disturbance of said companion stop. By using the cross strap and the two screws, the same screw holes and screws may be used as in my said prior construction. The only change is that the milling cuts taken in the segment posts to provide seats for the stop fingers are narrow instead of broad as for the milled stops. The present construction is considerably cheaper than prior constructions since the making of my novel stop devices requires only a bending o eration instead of a milling operation as efore.

Various changes may be made without departing from my invention.

What I claim as newand desire to secure by Letters Patent, is: p

1. In a typewriting machine, the combination of two relatively movable parts, stop supports, stop devices comprising two sheet metal fingers arranged in parallelism and each adjustably supported at one edge only in a groove in said support, the broad faces of said fingers being opposite each other, said fingers extending beyond said grooves and said ,extensions being bent or inclined toward each other; and means for maintaining said parallel portions of said fingers fixedly in said slots after said adjustment. f

2. In a typewriting machine, the combination of two relatively movable parts; and a set of stop devices therefor comprising two slidable stop fingers arranged in parallelism, a cross strap frictionally engaging both of said stop fingers, and means for fixing said cross strap in place.

3. In a typewriting machine, the combination of tWo relatively movable parts, and stop devices therefor comprising two slidably mounted stops, a cross strap frictionally engaging both of said stops, and two screws for securing said cross strap in place.

4. In a typewriting machine, the combination of a shiftable type bar segment, and stops therefor comprising two sheet metal stop fingers slidably seated in stationary guides, a cross strap frictionally engaging both of said stop fingers, and two screws for securing said cross strap in place, the construction being such that by loosening one .of said screws the neighboring stop finger may be slidably adjusted without affecting the other stop finger.

5. In a typewriting machine, the combination of a type bar segment, and a set of stop devices therefore comprising two sheet metal stop fingers arranged in parallelism, said stop fingers fitting edgewise in slots or kerfs in the supporting part, a single frictional device en aging with the exposed edges of both ngers to maintain said fingers in adjusted positions, and means for securing said device.

6. In a typewriting machine, the combination of a segment, guide posts, and a set of stop devices for limiting relative movement between said parts, said set comprising two cooperating pairs of stops at each side of the segment, one of said pairs comprising two stop fingers arranged in parallelism, said stop fingers fitting edgewise in slots or kerfs in one of the posts, and a strap arranged transversely of said stop fingers and iil frictional contact with their exposed e es.

In a typewriting machine, the combination of a segment, guide posts, and a set of stop devices for limiting relative movement between said parts, said set comprising two cooperating pairs of stops at each side of the segment, one of said pairs comprising two stop fingers arranged in parallelism, said stop fingers fitting edgewise in slots or kerfs in one of the posts, and a'strap arranged transversely of said stop fingers and in frictional contact with their exposed edges, the free ends of said fingers being inclined or bent inwardly or toward each other.

8. In a typewriting machine, the combination of two relatively movable parts; and

a set of stop devices for limiting relative movement between said parts, saidset comprising two stop fingers arranged in parallelism, said stop fingers fitting edgewise in slots or kerfs in the supporting part, a strap arranged transversely of said stop fingers and in frictional contact with their exposed edges, and a pair of headed screws passing through said strap and exerting a binding effect thereon, each screw being near one of said fingers.

9. In a typewriting machine, the combination of two relatively movable parts, a plurality of adjustable stops assisting to determine the extent of relative movement between s'aid parts in both directions, a stop support, and means for fixing said stops in adjusted positions, said means including a single device engaging both stops but afi'ording individual adjustments of said stops, said device being removable and replacea 1e independently of said stops.

Signed at Ilion, in the county of Her- 15 kimer, and State of New York, this 25th day of March, A. D. 1919.

GEORGE A. 'sEIB.

Witnesses:

MARGARET M. PIERCE, LINNIE F. BURNETT.

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