US2641308A

US2641308A - Tractor seat mounting

Info

Publication number: US2641308A
Application number: US257334A
Authority: US
Inventors: Bock Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-11-20
Filing date: 1951-11-20
Publication date: 1953-06-09
Anticipated expiration: 1970-06-09

Description

June 9, 1953 J. BocK 2,641,308

TRACTOR SEAT MOUNTING Filed Nov. 20, 1951 a4 z Z FVG. 2.

y INVENTORA Jose-Pff 500e,

Patented June 9, 1953 UNITED STATES PATENT OFFICE 2,641,308 l TRACTOR SEAT MOUNTING Joseph Boek, Kalispell, Mont.

Application November 20, 1951, Serial No. 257,334

3 Claims.

This invention relates to tractor seat mountings, and more particularly to a tractor seat mounting in which a'tractor seat is pivotally mounted on a hydraulically snubbed spring support for swinging movements between a forwardly disposed operative position and a rearwardly disposed position in which it is out of the way of an operator driving the tractor from a standing position.

It is amongthe objects of the present invention to provide an attachment which is interposed between the seat pan. and seat support of an existing tractor seat assembly to provide freedom of swinging movements of the seat pan about a generally horizontal axis between a forward operative position and a rearward inoperative position; which requires only minor modications of the existing seat support for its installation; which resiliently retains the seat pan in both its operative and inoperative positions; which does not interfere in any way with the operation of the tractor or cause any looseness of the seat when in operative position; and which vis simple and durable in construction, economical to manufacture, easy to install, and positive and effective in use.

Other objects and advantages will becomeapparent from a consideration of the following description and the appended claims in conjunction with the accompanying drawing, wherein:

Figure 1 is a side elevational View of a springsupported, hydraulically snubbed seat assembly with means illustrative-of the invention pivotally connecting the seat to the seat support;

Figure 2 is a cross-sectional View on the line 2-2 of Figure 1; and

Figure 3 is a fragmentary cross-sectional view on the line 3-3 of Figure 2.

With continued reference to the drawing, the seat support comprises a pedestal I mounted on the tractor platform II and including an upwardly and forwardly inclined portion I2 bifurcated to receive the lower front end of a tubular seat post I3 and apertured to receive a pivot pin I4 which extends through the bifurcated upper front portion of the pedestal and through the seat post adjacent the lower forward end of the latter to pivotally connect the seat post to the pedestal for swinging movement about an axis substantially perpendicular to a vertical plane including the longitudinal center line of the associated tractor.

The seat post I3 has a bend, as indicated at I5, intermediate the length thereof, and the portion of the seat post between the bend I5 and the pivot pin I4 is rearwardly and upwardly inclined, while the portion of the seatpost at the side of the bend I5 remote from the pivot pin I4 is substantially horizontally disposed. The longitudinal center line of the seat post is substantially in orparallel to the above-mentioned vertical plane which includes `the longitudinal center line of the Aassociated tracton An arm I6 is bifurcated at one end to provide spaced apart legs Ia and Ib secured at their distal ends to the pedestal I0 andthis arm extends upwardly and rearwardly from the rear side of the pedestal IIJ and is provided at itsI rear end with a substantially horizontally disposed spring support Il. A clamp. bracket I8 is secured on the rearward portion of vthe seat post I3 and comprises a pair of members 'I9 and 29 of channel-shaped cross-section disposed at` respectively opposite sides of the seat post and each having 'a web or bight portion transverselyv curved so that the opposed members 'provide a substantially tubular structure receiving the adjacent end portion of the seat post, and each member has a pair of spaced apart and substantially `parallel legs or flange portions extending from the same side of the web portion. Theopposite sides of the seat post I3 arereceived inthe concavities of the web portions-of the corresponding bracket members I9 and 20, and the bracket members are rigidly secured to the seatlpost'by suitable means, such as welding, or by bolts extending through the bracket members andholding them firmly-against the corresponding side surfaces of the post. The bracket members have their upper flanges disposed substantiallyrin a common plane and their lower flanges also` disposed substantially in a common plane which is placed below and substantially parallel to- Ithe plane of the upper flanges, both of theseplanes being substantially horizontally disposed and parallel to the longitudinal center line' of the rearward portion of the seat post.

A spring abutment plate ZI of circular shape is disposed below the lower flanges of the bracket VI8 and secured to these flanges'by suitable means,

such as the bolts 22, and a helically wound spring 24 of partly conical shape is disposed between the spring support Il and the abutment plate 2l with its smaller end resting on the spring support and its larger end engaging the under side of the abutment plate.

A hydraulic snubber 25 of well known construction is connected at one end to the pedestal I9 at the rear upper corner of the-pedestal bya pivotal yconnection -26 and is connected at-its upper end to a lug structure 21 projecting downwa'rdly and rearwardly from the seat post I3 adjacent the bend I therein by a pivotal connection 28.

A seat pan 30 of well known construction is disposed above the upper flanges of the bracket members I9 and 20, and is provided on its bottom with a lug or socket structure 3I of rectangular shape having apertures disposed one adjacent each corner thereof for receiving bolts for connecting the seat to the upper flanges of the clamp bracket members. Normally, the seat pan is secured directly to the upper flanges of the clamp bracket members, and the seat is thus rigidly connected to the seat post I3 and cannot be swung or tilted relative to the seat post.

The arrangement so far described is already in existence, and constitutes no part of the present invention, except in the combination thereof with the hinge means provided by this invention Vfor giving to the seat pan a freedom of swinging movement between a forward operative position and a rearward inoperative position.

It is at times necessary for the operator to drive the tractor from a standing position so that he can more closely observe the operation of .tractor-drawn machinery or the vdistance of the tractor from crop plants, obstacles, ditches, et cetera. When the operator is standing on the tractor platform II, the seat pan 38 in its normal, forward position interferes with the necessary movements lof the operator in handling the tractor, and becomes Aa lsource of ymajor inconvenience. The hinge means of the present invention permits `swinging the seat pan to a rearward position where it is :out of the way 'of an voperator standing on the tractor platform and driving the tractor, and comprises a hinge bracket 34 secured to the spring abutment plate 2l and having hinge sleeves at the rear end of the seat post I3, a `hinge plate .35 of rectangular shape :rigidly secured to the seat pan 38 by the lug structure 3l, and bolts 32, the bolts ,normally used to secure the seat pan to the rclamp bracket being omitted, and having a hinge sleeve disposed between the hinge sleeves on the bracket 34, .a hinge pin 36 extending through the hinge sleeves and pivo'tally connecting the hinge plate to the hinge bracket, a substantially horizontally disposed rod 31 positioned below and somewhat rearwardly of the hinge pin A36 and secured to the hinge bracket 'by

struts

38 and 39, arms 4D and 4I projecting outwardly one from each side vof the hinge plate 35 at the forward end of the hinge plate and tension springs -42 and 43 connected between the rod 31 `at the respectively opposite ends thereof and the outer ends of the corresponding arms 4U and 4I to resiliently hold 'the seat pan Yin either 'its forward operative position or its rearward inoperative position.

The hinge bracket 34 comprises a pair of .

flat bars

45 and 45 disposed in spaced apart and substantially 'parallel relationship to each other, and secured on the upper surface of the spring abutment plate 2l in position such that they are 'substantially equally spaced :from and parallel to a vertical plane including 'the longitudinal center line of the `seat post I3. VHinge sleeves 41 and -48 `are provided on the bars 45 `and 43, respectively, at the rear ends of the bars, and :above the upper surface of the spring abutment plate 2|. The 'bars "are provided with :longitudinally spaced apertures through which vthe lbolts 22 `extend, the bolts also extending through corre- .sponding apertures in the abutment plate ,2L

4 There are four of the bolts 22 disposed one near each end of each of the bars and 46.

As explained above, the rod 31 is substantially horizontally disposed, and this rod is substantially perpendicular to the vertical plane including the longitudinal center line of the post I3 and extends substantially equal distances to opposite sides of such plane withl its ends extending outwardly beyond the corresponding bars 45 and 46., as is clearly illustrated in Figure 2, and vthe struts 38 and 33 are vconvergently inclined upwardly and forwardly from locations adjacent the respectively opposite ends of the rod 31 to the rear ends of the

corresponding bars

45 and 46.

The hinge plate 35 is provided near its rear end with a hinge sleeve l49 on its under surface, which hinge sleeve .is disposed between the

hinge sleeves

41 and 48 on the hinge bracket 34, the

sleeves

41 and 48 being in longitudinal alignment with each other.

As stated above, the hinge pin 33 extends through the

hinge sleeves

41, 48 and 49, yand hingedly connects the seat-carrying plate 35 to the hinge bracket 34 secured to the spring abutment plate 2 I, which is in turn rigidly `Secured t0 the seat post I3 by the clamp bracket I3..

The tension springs 42 and 43 are inclined upwardly and forwardly, when the seat is in its forward operative position, as illustrated in Figure 1, from the corresponding ends of the rod 31 to the outer ends -of the corresponding arms 48 and 4I on the hinge plate 35, and are so related to the hinge pin 36 that when the .seat is :moved from its forward to its :rearward position, 'these springs pass .over the `ends of the .hinge pin and constitute toggle springs which resiliently .hold the seat vpan in either of its two positions.

The invention `:may .be embodied in other specific forms without ydeparti-r-ig from the spirit or .essential characteristics thereof. The present embodiment is, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the :invention being indicated by the Aap pended claims rather Vthan by the foregoing description, and all changes coming within 'the meaning and range bf :equivalency of the .claims are, therefore, intended :to he embraced ltherein.

What is claimed is: I

1. In a tractor seat assembly including -a tractor-mounted pedestal, a `seat post pivotally connected at one end to ysaid pedestal and yeX- tending upwardly and rearwardly of the associated tractor from said one end, clamp 'brackets secured on said `post adjacent the other end thereof, a spring abutment plate car-ried by said brackets below said 'pos-t, a spring support carried by said pedestal Ibelow said spring abutment plate, a compression spring ldisposed between said abutment plate and -said spring support resiliently -supporting the rear end of said post, a hydraulic snubber connected 'between said pedestal and said post controlli-ng the faction of said compression spring, and a seat pan disposed above said clamp vbrackets 'at the upper side vof the latter, a hinge mounting v`'for 4said seat pan comprising bars secured to said Aclamp brackets in spaced apart and substantially parallel relations'hip to each other and said lseat post, hinge sleeves disposed one on each of v'sa-id 'bars at the rear ends thereof, a rod disposed .below :the rear ends of said bars and extending transversely thereof with :its ends projecting .outwardly of the fcorresponding bars, struts :connecting said rod to .said bars., a plate disposed between said brackets and said seat pan and secured to the latter, a hinge sleeve on said plate at the rear end of the latter and disposed between the hinge sleeves on said bars, a hinge pin extending through said hinge sleeves and having its axis substantially at right angles to the longitudinal center line of said post, arms projecting one from each side of said plate at the front end thereof. and tension springs connected one between each end of said rod and each of said arms at the outer ends of said arms.

2. In atractor seat assembly including a seat post, clamp brackets secured to said seat post adjacent fone end thereof, a spring abutment plate secured to said clamp brackets at one side of said seat post and a seat pan disposed adjacent the` side of said clamp brackets remote from saidabutment plate, means pivotally connecting said seat pan to said clamp brackets comprising hinge brackets secured to said clamp brackets and each having a hinge sleeve at one end thereof, a hinge plate secured to said seat pan above said hinge brackets and having a hinge sleeve at one end thereof disposed in transverse alignment with the hinge sleeves on said hinge brackets, a hinge pin extending through said hinge sleeves and pivotally connecting said hinge plate to said hinge brackets, means supported on said hinge brackets providing spring anchors disposed respectively at the outer sides of said hinge brackets and spaced from the sides of the latter remote from said hinge plate, tension springs connected at corresponding ends thereof one to each of said spring anchors, and means connecting said tension springs at their other ends to said hinge plate at the end of the latter remote from said hinge pin.

3. In a tractor seat assembly including a seat post, clamp brackets secured to said seat post adljacent one end of the latter, a spring abutment plate secured to said clamp brackets at one side 'of said seat post and a seat pan disposed adjacent the side of said clamp brackets opposite said abutment plate, means pivotally connecting said seat pan to said clamp brackets comprising hinge brackets secured to said clamp brackets and each having a hinge sleeve at one end thereof, a hinge plate secured to said seat pan above said hinge brackets and having a hinge sleeve at one end thereof disposed in transverse alignment with the hinge sleeves on said hinge brackets, a hinge pin extending through said hinge sleeves and pivotally connecting saidf hinge plates to said hinge brackets, means supported on said rhinge brackets providing spring anchors disposed respectively at the outer sides of said hinge brackets and spaced from the sides of the latter remote from said hinge plate, tension springs connected at correspondingv ends thereof one to each of said spring anchors, and means 1a plane which includes the longitudinal center line of said seat post and is disposed perpendicular to the plane of' said spring abutment plate.

JOSEPH BOCK.

References cited in the nieof this patent UNITED STATES PATENTS Number Name Date 709,619 Wangerin Sept. 23, 1902 2,534,386 Stewart Dec. 19, 1950 2,563,277 Roeder Aug. 7, 1951