Wireless-Telegraph Receiver Page: 3 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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918,618
Fast upon the base 1 at the end thereof re-
mote from the plate 2, there is secured a
cylindrical block 23 by means of a screw 24
or in any other manner. On top of this block
5 is a plate -25 secured thereto by an overhang-
ing dfange 26 of the screw sleeve 27 adapted
to thread on the block 23. - Formed .on the
plate 25 at its center is a boss 27 froniwhich
rises a number of outwardly-extending arms
10 28 so grouped as to constitute a cup or holder
for a mass 29 of suitable material such as a
crystal or a group. of crystals, and prefer-
ably a rough crystal or group of crystals ofI
silicon, since the last -named substance is
15 found to give most excellent results. The
location of the screw 21 and of the cup
formed of the arms 28 is such that when a
mass .29 is seated in the cup the free end of,'
the screw 21 will make contact therewith. -
20 Mounted upon the base 1 are two binding
posts 30-31. The binding post 30 is con-
nected by a conductor 32 to the. plate 2,
which like the other parts of the structure
aside from the base and the crystalline mass
25 29 is made of metal, and the binding post
31 is connected by' a conductor 33 to- the
block-23. Of course the connections of the
binding posts may be reversed. The circuit
terminals of the receiving aerial are indi-
30 cated at 34.
By using the rough crystalline mass 29
seated in the cup 28 and held therein by the
,screw 21, the adjustment of the crystalline
mass is insured, since shocks and jars will
35 not interfere with an adjustment once made,
and a serious difficulty heretofore present in
detectors of this character is avoided. Fur-
thermore the cup or holder, because of the
fingers 28, is readily shaped to the crystal
40 and because of its capability of rotation on
the block 23 may be turned upon a vertical
axis to adjust the crystal to the screw. 21.
It is found that the rough crystalline pieces
give better results than pieces that have
45 been ground down smooth.
The carriage 6, because of its capability of
rotative movement upon the pin or stud 4
may be moved about said pin or stud as an
axis to bring the' end of the screw 21 into
50 proper relation to the crystal 29. By. ad-
justing the pivot screws 8 so that the bar 11.
is free to move about its screws as an axis,
the bar 11 automatically adjusts itself to
the crystal; If the screws 8 be made tight
55 then the adjustments are made through- the
. screw 21. The two opposing springs 16 and
19 are adjustable through. the screw 13 and
when once adjusted - counteract jars and
knocks, and thus the adjustment between the
60 screw 21 and the crystalline block or mass
21 is maintained automatically under the
various conditions of use.
. The cup or holder and the carriage .have
been described as 'rotatable about vertical
5 axes but this statement is to be taken in arelative sense only, since they may rotate on
axes set at any angle to the vertical, al-
though usually the instrument will be used
upon a horizontal surface so that the axis of
the cup and holder are really substantially 70
vertical.
What is claimed is:-
1. An electric wave detector comprising a
cup or holder for a suitable crystalline mass,
said cup being rotatable, a carriage movable 75
about an axis parallel to the axis of rotation
of the cup or holder, an arm pivotally con-
nected to the carriage and movable about an
axis at right angles to the axis of rotation.
of the carriage an adjustable contact screw 80
carried by the arm in position to engage a
crystalline mass carried by the holder, and
opposing springs connected to the carriage
and to the arm on opposite sides of the pivot
of the latter. 85
2.. An electric grave detector comprising a
holder. for a crystal or mass of crystals, and
a universally mounted terminal arranged to
engage the crystalline mass, said terminal
comprising a rotatable support,. an arm piv 90
oted on.said support for movement at right
angles'to the axis of the support, means on
said arm for engaging the crystalline mass
when in the holder, and means for clamping.
the support in any adjusted position of ro- 95
tation about its axis.
3. In an. electric wave detector, eleotri
circuit terminals arranged to grasp a crystal
or crystalline mass between them, -Qne of
said terminals being provided with a cup or 100
holder for the crystalline mass and rotatable'
about a central longitudinal axis, and the
other-terminal being rotatable about an axis
spaced from the axis of the first named ter-
minal and parallel therewith.. . 105
4. An electric wave detector comprising a
support or carriage having a movement of
rotation about a suitable pintle, claniping
means for holding the carriage in adjusted
positions, an arm pivotally connected to the 1.10
carriage for' movement at right angles to the
movement of rotation of the.carriage, clamp-
ing means for locking the arm in any ad-
justed position, springs engaging the arn on
opposite sides of its -pivot and acting in op- 115
position, means for adjusting oiie of the
springs, an adjustable circuit terminal car-
ried by the ai'm and having means for lock-
ing it in adjusted position, a cup or holder
for a crystal'or crystalline mass in line with 120
the circuit terminal on the arm,, and rotata-
ble on an axis longitudinal to the adjustable
circuit terminal carried on the arm, and
means' for carrying the cup or holder in ad-
justed positions. .125
5. In. an electric wave detector, a rotata-
ble cup or holder rotatable about its central
longitudinal axis and adapted to hold a crys-
tal or crystalline mass, said cup or holder
constituting a circuit terminal, and another 13
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Way, Wesley M. Wireless-Telegraph Receiver, patent, April 20, 1909; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511318/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.