US 255809 A
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0. PFA'UNTZ 8v H. FRANK.
Patented Apr. 4,1882.
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UNITED STATES PATENT OFFICE.
CHARLES PFAUNTZ AND HENRY FRANCK, OF ST. LOUIS, MISSOURI.
SPECIFICATION forming part of Letters Patent No. 255,809, dated April 4, 1882.
Application filed December 10, 1881.
To all whom it may concern:
Be it known that we, CHARLES PFAUNTZ and HENRY FRANCK, citizens ot' the United States, and residents of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Hinges, ot' which the following is a specification.
This invention relates to certain improvements in that class of hinges which are nonprojecting and have their attaching-leaves connected together by a distance-lilik, on the pivot-pins of which the diiferent movements of the hinge parts take place successively; and this invention consists in forming the pivoteyes of the distance-link with square abutment shoulders or Kcorners and the leaves with ears or lugs projecting at right angles to the face of said leaves, the purpose of such construction being to control and direct the movement of the hinge parts upon each other, and thereby prevent said parts from buckling or moving too far past each other in the movements proper to the hinge.
rlo enable others skilled in the art to which our invention appertains to make and use the same, we will now proceed to more fully describe the same, referring to the accompanying drawings, in whieh- Figure 1 is a sectional view, illustrating the hinge in its open and closed positions. Figs. 2 and 3 are views of the parts detached. Fig. 4 is a perspective view. Fig. 5 is a view of frontface of hinge.
Referring to the drawings, A A represent the two leaves of the hinge, having pivot eyes a a', as usual. i
"B is the connecting-link, for connecting the two leaves A A together, being formed for this purpose with eyes b b for the passage of the pivot-pins o c. The corners b2 b3 of the link B are formed square, so as to abut against the projecting stop ears or'lugs a2 a3 on the hinge-leaves A A and limit the movement of (No model.)
the parts in use. The link B will be made of any desired length to suit thepurpose for which it is designed, depending entirely upon the amountofprojection upon the frame, Snc., which it is desired to clear.
The mode of operation of the hinge is as follows: The turning of the door first takes place at the pivot c, so as to swing the door clear of all projections on its frame. After this the balance of thermovement takes place upon the pivot-pin c', the two positions ofthe hinge being shown in full and dotted lines in Fig. 1.
By the improved construction above described a hinge is formed which has no projection above the face of the hinge, which is a very valuable feature in hinges for piano-tops, 86e., as it does not oft'er any projection to wear the covers used on such articles.
We are aware that prior to our invention non-projecting hinges have been formed with two members united together by a distancelink and having two pivots, on which the movements ofthe hin ge take place successively. We therefore do not claim such a combination, broadly; but j What we do claim as our invention, and desire to secure by Letters Patent, is`
rEhe combination,in a non-projecting hinge, of the attaching leaves A A', having pivoteyes c a' and projecting lugs a? as, with the connecting-link B, having pivot-eyes b b and square corners or shoulders b2 b3, al1 arranged substantially as herein described, and for the purpose set forth.
In testimony whereof witness our hands this 1st day of December, 1881, at St. Louis, Missouri.
CHARLES PEAUNTZ. HENRY FRANCK.
In presence of- FRED RAUM, JAs. W. ALLEN.