Device for obtaining a Right or Left Rotary Movement of Operating Shafts in Tools and the like.
Year: 1897

page_text: Date of Application, 18th Nov., 1897-Accepted, 5th Feb., 1898
.
COMPLETE SPECIFICATION.
Device for obtaining a Right or Left Rotary Movement of Operating
Shafts in Tools and the like.
We, JOHANN SCHLUCH, of Aix-la-Chapelle, Rhenish Prussia, Germany, Master-
Workman, and JEAN FOBER, Architect, of Hergenrath, near Aix-la-Chapelle,
Germany, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
My invention relates to a new and useful device for obtaining a right or left
rotary movement of operating shafts, and the objects of my improvement are to
provide at will a right or left rotary movement of an operating shaft of any kind;
yet it is more especially adapted to tools, as for instance, to screw-drills, screw-
drivers, turn-screws and the like. Referring to the accompanying drawings, which
are made a part hereof, and on which similar letters of reference indicate similar
parts throughout the several views,-
Fig. 1 is an elevation of such device embodying my invention, especially adapted
to tools;
and finally
Fig. 2 is a vertical cross-section of the same,
Figs. 3-8 show detailed parts of the device.
H is a tube or socket, provided with a right and left handed female thread
of generally the same pitch. The width in the bore of that tube is enlarged on
its upper extremity to the deepness of the female thread.
D is a shaft in that tube, the inferior extremity of E of which is reduced and
bears two projecting studs b. On the reduced end of the shaft D is arranged
between the aforesaid studs a sleeve N, the diameter of which is as large as the
width in the bore of the tube D and which is flattened at diametrically opposite
sides, in the middle of which sides are disposed to turn round small studs 2, small
pieces s, in shape of half an ellipsoid, corresponding to the shape of the female
threads in the tube D.
The sleeve N on both its extremities is centrically slotted at e, those slots being
adapted to alternately keep the studs b, on the reduced end of the shaft D, pene-
trating the sleeve N.
The above named pieces S are adapted to slide in the grooves of the right and
left handed female thread of the tube H. On the upper extremity of the tube H
there lies a disk T, that is perforated at two places to have the pieces $ entered in
it as represented in Fig. 7.
The tube H is threaded externally on its upper end and there is screwed on it
a perforated mouth-piece M through which passes the shaft D, guided by means of
this mouth-piece in its vertical axis.
The exterior upper end of the shaft 1) can be formed to the different purposes
for instance to a screw-drill, a screw-driver, a turn-screw or the like. In the
annexed drawing this end is outwardly threaded and in its middle slitted to
receive any especial operating instrument that is kept in that slit by means of a
small screw-nut o.
The operation of the above described device is as follows:-

page_text: When the small nuts $ being arranged at opposite flat-sides of the socket N,
slide in the right handed female thread, the shaft 1 is operated in the hitherto
well known manner; it rotates in a right direction; but, on the contrary, when
the pieces S slide in the left handed female thread, the shaft 1) turns in a left direc-
tion.
To change the rotary movement of the shaft D, from the left to the right, or
vice versa, I draw the shaft D nut of the tube H, till the sleeve N has reached the
upper extremity of the tube H (Fig. 7) in which position the small pieces S may
enter into the perforations of the disk T.
Now, the inferior stud on the reduced end of the rod D, meshing with the
inferior centrical slot c, in the socket N, and the upper extremity of the tube H
having an enlarged width in the bore I can turn the shaft D and with it the
sleeve N bearing the pieces S, round its vertical axis till the pieces S are above the
other handed thread, where they can enter again by pressing down the shaft D.
So the right rotary movement of the shaft D can be reversed into the left rotary
movement and vice versa.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner it is to be performed, I declare that what claim is:-
1st. The combination, in a device for obtaining at will a right rotary movement
or a left one of operating shafts for tools and the like, of a tube provided with a
right and left handed female thread at the same time and the width in the bore
of which is enlarged at its upper extremity, a rotary shaft or rod, the inferior end
of which is reduced and provided with two small studs, a sleeve arranged on said
reduced end of said shaft or rod and provided at its vertical extremities with cen-
trical slots, the said socket being flattened at opposite sides and bearing on small
studs fastened in the said flat-sides of said socket, small pieces being adapted to
slide in the groove of the aforesaid female threads, and means for reversing the said
nuts from the right handed female thread to the left handed one, or vice versa,
essentially as set forth and for the purpose specified.
2nd. In a device for obtaining at will a right rotary movement or a left one of
operating shafts for tools and the like, a tube provided with a right and left handed
female thread at the same time and the width in the bore of which is enlarged at
its upper extremity, a rotary shaft or rod, the inferior end of which is reduced and
provided with two small studs, a sleeve arranged on said reduced end of said shaft
or rod and provided at its vertical extremities with centrical slots, the said sleeve
being flattened at opposite sides and bearing on small studs fastened in the said
flat-sides of said socket, small pieces, being adapted to slide in the groove of the
aforesaid female threads, a disk on the upper extremity of the said tube, said disk
being perforated at diametrical sides, essentially as set forth and for the purpose
specified.
Dated this 10th dot of Natambon 1907
JOSEPH MÖHLIG,
Agent for Applicant, Aix-la-Chapelle, Germany.