Year: 1899

page_text: I, ARMIN KRAH, of 78, Alte Jakob-Strasse, Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to a modification of the forms described in prior British
Patents No. 13899/1895 and No. 6866 of 1896. By a combination of these two
arrangements it is possible to construct almost all the parts of sheet iron and
so obtain greater simplicity of construction and cheapen the manufacture
thereof.
To the back of the file an iron strip is attached provided with two wings
turned up at right angles to the said strip, to serve as bearings for pivot pins.
To these pins two side plates are hinged taking the place of the wires used in
the previous arrangements (above mentioned). The receiving or retaining wires
are soldered into the scroll of the side pieces. In their closed position the side
pieces are locked by triangular formed catches provided at the end of a lever.
said catch being adapted to enter openings in the side pieces and rest against
depressed portions of these latter. When the lever is depressed the catches are
raised and disengage the side pieces. These latter may be placed under the
tension of a spring secured to a lug cut out and bent upwards from the
plate.
The second modification differs from the former by having its lever pivotted
to one of the side pieces by means of a pivot pin pivotted to a separate support.
With this form of lever instead of two catches only a single catch is required to
retain the opposite side piece. This form is further simplified by combining
the two hinge pins for the side pieces in a single pin.
In a further slight modification of the aforesaid lever the two sides of the
said lever are made to form an incline in a downward direction. The two side
pieces are each provided with a projection which press against the inclined sides
of the lever. Thus by depressing this lever the inclined sides have the tendency
to force the side pieces apart directly they are released by the catches. This
enables the spring of the aforesaid first arrangement to be dispensed with.
Dated this 11th day of March 1899.
HASELTINE, LAKE & Co..
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: the same is to be performed, to be particularly described and ascertained in
and by the following statement:
This invention relates to a modification of the forms of letter files described
in the Specifications of prior British Patents No. 13899/1895 and No. 6866 of 1896.
By a combination of these two arrangements it is possible to construct almost
all the parts of sheet iron, and so obtain greater simplicity of construction and
cheapen the manufacture thereof.
The invention is illustrated in the accompanying drawing in which
Figure 1 is a front elevation, showing the operative parts of the improved
file.
Figure is a sectional side elevation of the same.
Figure 3 is a cross section thereof on the line of Figures 1 and 2 drawn
to an enlarged scale.
Figures 4 and 5 are views similar to those shown in Figures 1 and 2 illus-
trating a modification of the improved file.
Figure 6 is a cross section of the same taken on the line y y and
Figure 7 shows a detail hereinafter described.
In Figures 1 to 3 the back is shown with an iron strip g attached to it
and having two wings gl turned up at right angles to the said strip to serve as
bearings for pivot pins d and e. To these pins two side plates are hinged taking
the place of the wires used in the previous arrangements above mentioned.
The receiving or retaining wires and bare soldered into the scroll of the
side pieces. In their closed position, as seen in Figure 3, these side pieces are
Jocked by triangular formed catches provided at the end of the lever i
said catches being adapted to enter openings in the side pieces and rest against
depressed portions of these latter. The lever is fulcrumed on the pin p.
When the levers is depressed in the direction indicated by the arrow, Figure 2,
the catches are raised and disengage the side pieces. These latter may be
placed under the tension of a spring & secured to a lug g cut out and bent
upwards, from the plate as shown.
The modification shown in Figures 4 to 6 differs from the former by having
its lever u pivoted to one of the side pieces el by means of a pivot pin n and
not as shown in Figures 1 to 3, wherein it is illustrated as being pivoted to a
separate support. With this form of lever, instead of two catches z, only a
single catch is required to retain the opposite side piece. This form is
further simplified by combining the two hinge pins d and e for the side pieces c"
in a single pin c as shown in Figure 6.
Figure shows a further modification of the aforesaid lever u in which the
two sides of the said lever are made to form an incline in a downward direction.
The two side pieces are each provided with a projection which presses
against the inclined sides of the lever u. Thus by depressing this lever the
inclined sides have the tendency to force the side pieces cll apart directly they
are released by the catches z z. This enables the spring & Figures 1 and 2 to be
dispensed with.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is―
1. In the arrangement of letter files described in the British Specifications
No. 13899 A.D. 1895 and No. 6866 A.D. 1896, the substitution for the curved
portions of the lever of catches adapted to engage in depressions of the
side-pieces Figures 1 to which replace the wire-straps formerly employed
2. In the arrangement claimed in Claim 1, the manner of securing the lever u
to one of the side pieces " Figures 4 to 6, so as to dispense with one of the
catches by causing the catch to engage the other side-piece c¹¹.
3. In the arrangement claimed in Claim 1, the securing of the side-pieces c

page_text: to a single hinge-pin e Figures 4 to 6 in lieu of the two pins & and e shewn in
Figures 1 to 3.
4. The modified lever u provided with inclined sides and acting in combination
with projections on the side pieces cl Figure 7 in such a manner as to force
the latter apart directly they are released by the catches
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.