US974882A - Type-writing machine. - Google Patents

Description

E. B. HESS. TYPE WRITIG MACHINE.

APPLIOATION FILED Nov. 22, 1906.

Patented Nov. 8, 1910 nnwann n. nnss, or Nnv YORK, n.-'Y.' ,SSIGN0B, To ROYAL 'rrrnwm'rna oonrnn'r,

or Homann, NEW JERSEY, avoonronarron ornew JERSEY.

rrrnwnrrrte Massima.

assess.

Specification of Letters Patent.

`4Application filed November 22, 1906. Serial No. 344,529.

` To all 'whom 'it may concern:

Be it known that I, EDWARD B. Hass, a citizen of the United States, residing in the borough of Brooklyn, city and State of New 5 York, have invented certain Improvements in Type-Writing Machines, of which the following is -a specification.

This invention relates to paper feed de- 'vices ofA an ordinary 4type-'bar rotatable l0 platen machine and comprises certain improvements in details of construction thereof. I

In the accompanyin drawingt-'Figure 1 is a front elevation o so much of. a typewriting machine carriage as is desirable to illustrate the invention: Fig. 2, a bottom plan view thereof; Fig. 3, a detail sectional -view showing the means for supporting and, regulating the tension of the rear feed rolls:

Fig. 4, a transverse detail sectional view showin the means for supporting the front feed ro ls.

The front feed rolls a, three of which lare shown, work through apertures in the paper guide plate X, and are carried upon a Shaft athe ends of which are seated in open bearings b3 in corresponding ends of bell crank levers b. The opposite arms of these levers lie in transverse notches in a rocking bar c, mounted to turn in the end plates of the carriage and by the rotation of which the bell cranks are moved in a direction to carry the feed rolls c away from the platen Y. The bar c may be rocked by means of a gear c applied to one of its ends and meshing with the enlarged toothed end c2 of a lever pivoted on an end plate of the carriage. On the up er side of the bottom rail of the carriage in the under face of which may be 40 the usual ball race or way) are secured curved springs b2 the free ends of which are bifurcated or bent into U-shape to embrace the arms of the bell crank levers carry- 'ing the shaft a. The reaction of these 5 springs tends to carry the rolls into engagementlwith 'the platen. The base of each spring. b2 is slotted for passage of the bolt attaching it to rail B. This affords a means of adjusting the free end of the spring with reference to the bell-crank arm upon which 1t operates.

The rear feed rolls (Z are carried by a shaft cl, the ends of which are mounted in'open bearings e (similar to the bearings b3) intermediate the ends of 'arms c Whose corresponding ends are attached to a rock shaft e2 turning in bearings on a plate F extending betweenthe side plates of the carriage.

VThe opposite or free ends of these arms lie in transverse recesses in the rotatable bar c on the side thereof opposite that containing the recesses in whichvthe arms of the bell crank levers lie. To impose adjustable tension upon the arms e, tending to carry the rolls al into engagement with thel platen, there is'employed for each such arm a Hat or plate spring 7 curved at one vend to embrace, or partially embrace, the bar and having at the opposite end a right angle extension f seated in a recess or slot in the plate one end of which loosely engages the plate and which has an aperture through whichv the bolt passes, a spring adjusting nut applied to the bolt and against which the spring reacts, and a Vfeed roll carrying-arm arranged at a right angle to and engaged by the'free end of the spring.

In testimony whereof, *I have hereunto subscribed my name.

. EDWARD B. HESS. Witnesses:

EDWARD C. DAVIDSON, L. F. BROWNING.

Patented Nov. S, ,i mit,

Images