US1442664A - Adjustable seat - Google Patents

Description

N. HANSEN.

ADJUSTABLE SEAT.

Jan. 16, 1923.

FILED FEB. 27,1922.

avwe'm toz Patented Jan. 16, 1923.

NIELS HANSEN, OF EAST STANWOOD, WASHINGTON.

ADJUSTABLE SEAT.

Original application filed August 9, 1920, Serial No. 402,134. Divided and this application filed February 27, 1922. Serial No. 539,468.

To all whom it may concern:

Be it known that I, NIELS HANSEN, citizen of the United States, residing at East Stanwood in the county of Snohomish and State of l vashington, have invented certain new and useful Improvements in Adjustable Seats; and I do declare the followin to be a full, clear, and exact description 0 the invention, such 'as will enable others skilled in the art to which it appertains to make and use the same.

This application relates to improvements in adjustable seats and more particularly to those adapted primarily for use upon wood sawing machines, the present invention forming a division of my pending U. S. application, Serial No. 402134, filed August 9, 1920.

It is the object of the invention to provide a simple and inexpensive, yet a highly eliicient and desirable seat for the operator of a machine, preferably of a treadle oper ated machine, the construction being such that the seat may be readily adjusted toward and from the foot treadle or adjusted vertically, according to the requirements and size of the operator.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and. claimed, the description being supplemented by the accompanying drawings with the foot treadle of a wood-sawing machine.

Figure 2 is a horizontal sectional view as' indicated by line 2 2 of Figure 1.

Figure 3 "is a rear elevation of the adjustable seat and associated parts.

In the drawings above briefly described, I have shown my invention in connection with a portion of the frame 1 of a woodsawing machine, upon which frame a foot treadle 2 is mounted for operating the machine. Behind this foot treadle, the frame is provided with a platform 3 having a pair of parallel tracks 4 between which a suitable chair-base 5 is slidably received, said base being supported by the platform 3. This platform is provided with a series of rackteeth 6 which mesh with a spur gear 7 on a shaft 8, a removable rod 9 beiii adapted for engagement with said gear and With a pair of bearings 10 carried by the base 5, so that this base may be held against sliding along the tracks 4 after it isonce adjusted to the desired position. By removing the rod 9, the base may be slid either forwardly 0r rearwardly as required but when this rod is again engaged with the bearings 10 and the gear 7, movement of said base is prevented.

Above the base 5 and pivoted at its front end thereto, is a chair seat )1 1 having a rigid back 1-2, the pivotal connection between the front end of the seat 11 and the base being preferably efi'ected by means of a transverse rod 13 passing through a depending bearing '14 on said seat and through upstanding bearings 15 with which the sides of the base 5 are provided. The rear end of the seat 11 rests on an eccentric 16 having trunnions 17 ro'tatablysupported by the sides of the base 5 andit will be seen that by rotating said eccentric, the inclination of the back 12 and the seat 11 may be varied andalso the rear end of said seat may be raised or lowered as occasion may require. For adjusting the eccentric in this manner, one of the 'trunnions 17 is by preference provided with a hand-wheel 18 having a circumferential series of openings 19 through any one of which a. pin 20 may be passed for engagement with the base 5, so as to hold the eccentric in adjusted position.

By employing the construction shownand described, the seat may be moved forwardly or rearwardly or adjusted in height or inclina'tion, to meet-the requirements of the operator. I

' Since excellent results have been obtained from the details disclosed, they are preferably followed, but within the scope of the invention as claimed, numerous minor changes may be made.

I claim:

1. A device of the class described comprising a base having parallel side members positioned vertically, a seat above said base pivotally connected at its front end therewith, the pivotal connection of said seat with said base including an elongated bearing extendin substantially throughout the width of an secured in contact with said seat throughout its length, an eccentric supporting the rear end of the seat, said eccentric being of a length substantially equal the Wi d-l of the seat and having its ends in llll] abuttin relation with the inner sides of said sid% members, trunnions extending outwardly from the ends of said eccentric and rotatably resting upon said side members, and means associated with one of said trunnions for turnin the same and holding it in adjusted position.

2. A (device of the class described comprising a base composed of parallel side boards standing on edge in vertical planes and cross bars connecting said side boards,- upstanding bearings on the front ends of said side boards, the upper edges of said side boards having bearing notches near their rear ends, an elongated eccentric extending between said side boards and having trunnions at its ends restini'in said bearing notches, a seat board .w ose rear end rests substantially'throughout 1ts Width on said eccentric, an elongated bearing se- 20 tween "said upstanding bearings, a rod pass- 25 ing through these bearings, and means associated with one of said trunnions for holding the eccentric in adjusted position.

In testimony whereof I have hereunto set p my hand.

NIELS HANSEN. T

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