US423881A - Sash-balance - Google Patents

Description

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SASH BALANCE.

No. 423,881. Patented Mar. 18,1890.

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UNITED STATES PATENT OFFICE.

HENRY SOHMASEN, OF ST. LOUIS, MISSOURI.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 423,881, dated March 18, 1890. Application filed December 16, 1889. Serial No. 333,974. (No model.)

To all whom it may concern:

Be it known that I, HENRY SoHMAsEN, of St. Louis, Missouri, have madea new and useful Improvement in Sash-Balances, of which the following is'a full, clear, and exact description.

The improvement relates to that class of sash-balances wherein a spring-actuated pinion and rack are employed; and it consists in the special construction and combination of parts, as is hereinafter set forth and claimed, aided by the annexed drawings, making part of this specification, in which- Figure 1 is a sectional elevation showing the improved balance in position; Fig. 2, a face View of the balance-frame; Fig. 3, a plan of the balance, and Fig. at an elevation showing a modified arrangement of the improved balance.

The same letters same parts.

The leading feature of the construction is combining the rack, the pinion, the pinionactuating spring, the barrel, the head, and the lock substantially in the same plane, and in employing the pinion fora double purpose namely, for coaoting with the rack in raising and lowering the sash and also as a ratchet to co-operate with the lock to hold the sash at any desired level. From this peculiar construction two special advantages are obtained-a simpler mechanism and a stronger of reference denote the more durable one as compared with a sash balance construction wherein the locking mechanism is at the side of and separate from the pinion. By utilizing the pinion for the two purposes named a more compact structure is obtained and there is no tendency to twist or to turn the structure laterally in its place in the window-frame, and thereby to rack it more or less, as is the case when the locking mechanism is at one side of the spring-conraining case.

In the annexed drawings, A represents an ordinary sash, and B an ordinary windowjamb.

C represents the rack, and D the pinion. The pinion is attached centrally to the barrel E, which contains the spring F and is closed by the head G and journaled upon the shaft H, which in turn is journaled in the at k to the frame I. \V hen it engages with the pinion, that part is prevented from turning, and the sash is thereby fastened. Owing to the central position of the pinion in the frame I, thereis no tendency in the operation of the device to turn the barrel, so that it shall bear unevenly in its bearings, and when the lock drops into the pinion the shock incident to the arresting of the movement of the pinion is transmitted evenly to the barrelbearings.

In the present instance the pinion is shown applied to the jamb and the rack to the sash. These positions may be respectively reversed, the pinion being attached to and traveling with the sash and the rack attached to the jamb, as in Fig. 4.

The spring by means of a suitable key inserted in the opening h in the shaft can be wound, so that the spring shall be properly adjusted within the barrel to act to balance the sash in the usual manner. The pawl L and ratchetl are used in the customary manner to prevent he unwinding of the spring.

' I claim- In a sash-balance, the combination of the rack O on the sash, the barrel E, having pinions D and the spring F within and journaled in the window-jamb, the pivoted lock K, having handle 71', and the pawl L and ratchet Z to prevent the unwinding of the spring, all combined and coaoting in the manner and for the purposes set forth.

WVitness my hand this 11th day of December, 1889.

HENRY SOHMASEN.

Witnesses:

O. D. MOODY, D. W. C. SANFORD.

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