IMPROVE- MENTS IN VICES
Year: 1877

page_text: LETTERS PATENT to Heinrich Baecker, of Remscheid, Germany, of the Firm
Baecker & Busch, of Remscheid aforesaid, for the Invention of "IMPROVE-
MENTS IN VICES."
Sealed the 25th January 1878, and dated the 31st July 1877.
PROVISIONAL SPECIFICATION left by the said Heinrich Baecker at the
Office of the Commissioners of Patents on the 31st July 1877.
HEINRICH BAECKER, of Remscheid, Germany, of the Firm Baecker & Busch, of
Remscheid aforesaid. "IMPROVEMENTS IN VICES."
My Invention refers to improvements in vices.
Vices have hitherto been screwed and unscrewed by means of a straight mandrel
with a handle at its end. This method of screwing and unscrewing is very
defective; it requires an inconvenient amount of physical power; it unsteadies the
hand of the operator; it unnecessarily occupies time by reason of the operator
being compelled to step around every time in order to reach the handle for the
purpose of screwing up or unscrewing the object held by the vice; it often gets
unscrewed by itself, and endangers the work and the operator.
I obviate the above defects by applying a small toothed wheel to the mandrel of
the vice. This wheel catches in a larger toothed wheel, the axle of which is fastened
to one of the supports of the vice. This latter wheel is turned by a worm by means
of a handle connected with the same, which can readily be reached from the
operator's stand.
The advantages attained by my Invention consist in the removal of the defects
above mentioned; only a very slight exertion of physical power will be required;

page_text: the operator's hand remains steady; no time is lost by unscrewing, the piece of work
being held by one hand, and the vice screwed up or unscrewed by the other; the
vice cannot get unscrewed accidentally, and the work and the operator will not be
endangered.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Heinrich Baecker in the Great Seal Patent Office on the 29th January
1878.
HEINRICH BAECKER, of Remscheid, Germany, of the Firm Baecker and Busch, of
Remscheid aforesaid. "IMPROVEMENTS IN VICES."
My Invention refers to improvements in vices.
Vices have hitherto been screwed and unscrewed by means of a straight mandrel
with a handle at its end. This method of screwing and unscrewing is very de-
fective; it requires a considerable amount of physical power; it unsteadies the
hand of the operator; it unnecessarily occupies time, by reason of the operator
being compelled to step around every time in order to reach the handle for the
purpose of screwing up or unscrewing the object held by the vice; the vice often
gets unscrewed by itself, and endangers the work and the operator.
I obviate the above defects by applying a toothed wheel to the mandrel of the
vice. This wheel catches in another toothed wheel, the axle of which is fastened
to one of the supports of the vice. This latter wheel is turned by a worm by
means of a handle connected with the same, which can readily be reached from
the operator's stand.
My said Invention is illustrated in the accompanying Drawing, in which,―
Figure 1 is a front view of my said Invention herein-before mentioned.
Figure 2 is a slot for guiding the mandrel.
Figure 3 is a side view of my said mechanism above mentioned.
Figure 4 is a side view of a vice in connection with my said mechanism.
Figure 5 is a front view of a vice in connection with my said mechanism.
Figures 6, 7, and 8 are front and side views of various kinds of vices in connection
with my said Invention.
Like letters indicate the same parts in one and all of the Figures.
The toothed wheel n is fastened to the mandrel m of the vice, and this said
wheel catches in the other larger toothed wheel o, the axle of which is united with
one or both of the supports of the vice, as shown by the letter a. The toothed
wheel o is turned by means of the worm b, the rotation of which is effected by
turning the handle c.
If there should be difficulties in fastening the axle of the worm b to any direct
part of the vice, a piece of sheet iron d is best riveted across the supports of the
vice, in order to serve for the fastening of the axle of the said worm. If the
worm b is put in rotation by means of turning the handle c, it will transfer its
rotation to the toothed wheel o, which, catching in the toothed wheel n, will again
transfer said rotation to the latter. The said toothed wheel n, being fastened to
the mandrel m, will by its rotation turn the latter, and thereby unscrew or screw
up the vice.

page_text: The advantages attained by my Invention consist in the removal of the defects
above mentioned; only a very slight exertion of physical power will be required;
the operator's hand remains steady; no time is lost by unscrewing, the piece of
work being held by one hand, and the vice screwed up or unscrewed by the other;
the vice cannot get unscrewed accidentally, and the work and the operator will not
be endangered.
Having thus fully described the said Invention and the manner of performing
the same, I wish it understood that I claim in a vice, the combination with the
mandrel of a toothed wheel catching in another toothed wheel, and of a worm,
which, being turned by means of a handle connected with the same, effects the
rotation of the said toothed wheels, in the manner and for the purpose set forth.
In witness whereof, I, the said Heinrich Baecker, have hereunto set my hand
and seal, this Fourth day of January, in the year of our Lord One thousand
eight hundred and seventy-eight.
Witness,
LOUIS BUSCH.
HEINRICH BAECKER. (L.S.)
In Firma Baecker & Busch.