US74347A - Territory - Google Patents

Description

hitch tetten @nicht @fitta Lafer@ Patent No. 74,347., dans Femm/.11, 186e.

IMPROVEMENT 1N BQUALIZING DOUBLE-TREE.

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To ALL wnoM 1r MAY c'oNonRN:

Be it known that we, EDWARD GRIswoLmJoEL B. Cantine., and WILLIAM BLAY, ot'j Hel-eno, in the'county of Edgerton,` Montana Territory, have invented a new andzimproved Equalizing Double-Tree and we do hereby declare that the followingis la full, clear, and exact description thereof, Ywhich will enable others skilled in the art to make and use the same, referencebeing hadV tc the accompanying drawings, forming part ofv this specifi. cation, in which- Figure 1 is a to'p view of our improveddouble-tree., j

Figure'2 is a sidevview of the same, partly in section, through the line :v x, 1.

Similar letters of reference indicate correspondingparts'. i

Our invention has for its object tov furnish an improved double-tree', so constructed and arranged as to promote safety and economy, and avoid noise and disarrangement; 'andl it cons-ists in n n improved double-tree, the end parts of which are hinged orjointed to the central part; in the combination of adraught-strap and rollersl with the double-tree or draught-bar, andinwthe combination of a 'rigid or exible strap with the end partszof.- the doubletree, and with draught-straps, the whole being constructed and arranged as hereinafter more fully described. I

A is the double-tree, which is Vsecured to the tongue or draught-bar of the -vehicle by a bolt passing through the centre of said double-tree in theordinary manner. The double-tree is made in three parts or pieces, the end-pieces, al, being each about one quarter the length of thecentral piece, a2. The end-pieces, al, are jointed to the ends of thecen'tral part, a2, in such awaythat they'may be turned back, so as to form an angle of forty-tive degrees, (45%,) or mor e,rwith the central part, but cannot be drawn 4farther forward than to bein a straightline with said central part, however much power may be applied to them. The joints are covered .and protected by abend, B, passing aroundthe upper, lower, and rear sides of the double-tree, as shown in figs. 1 and 2. Clio the pieces al, near their outer ends, and to the central pieces, a2, upon each side of its middle point, are pivoted rollers C,`said rollers being placed in pulley-boxes D,.securely attached to said double-tree, as shown yin tho drawings. Around the rollers C are passedstraps E, having hooks F, or their equivalents, attached to'their ends, for the attachment of the rtugs or traces, as shown in g. 1. ThesestrapgE, may bemade adjustable, by means of a buckle, Gr, attached to their. middle part, as shown in fig. il, i'or4 convenience in adjusting the length4 of the tugs; or each of themv may b'e made in one piece, and the length. of the tugs adjusted-in the'ordinary manner. In the case of a single horse, the rollers C and strap E may be attached directly to the thills.

The double-tree, A, constructed as hereindescribed, mayi'also be used for a. lead-har, in case more than one pair of horses are used. 'If desired, the straps E and rollers-C may be' attached to an ordinary double-tree, that is to say, to a doubletree made without joints.v H is a guide-strap attached to'the end-pieces, ahof the double-tree, near the joint or hinge by which the said parts, al, are connected tothe central part, a2.' The straps H may be rigid metallic straps,- or they may be made of leather, or other ilexible material. This latter construction is preferable when the double-tree is usedas a lead-bar g .in othervcases we prefer the rigid strap. The4 straps H not as a guard to hold the straps E awayfrom the wheels when the end parts, al, are drawn back, and they also enable the straps E to act as a'lcver'to draw the parts, al, into'their proper position, assoonas the obstructing force hasbeen removed. This construction prevents the-doubletree, every time it encounters an obstruction, from becoming entangled therewith, the joints enabling Aits ends to give', land thu-s free themselves when obstructed. l

Wcclaim as new, and desire to secure by Letters Patent- An improved-double-tr'ee, the end partsral, of which-are hinged or jointed to the central part, a, subi- -stcntially as herein shown and described, and for the purpose set forth. i

2. The combination ofthe strap or straps E sind pulleys with the 'draught-bar or double-tree, substantially as lherein shown and described, and for thepurpose set forth.

'3. v'lhe combination ofthe'rigid or flexible straps Hwith the end'parts of a jointed doubletree.and with VthestapsE, substantially as herein shown and described, and for the purpose set forth.

EDWARD GRISWOLD', JOEL B.: CBAMER, WILLAM BLAY.

Witnesses:'

It. LAWRENCE, J. EL 'VInroN.

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