J. F. LINDBERG CONDENSER Dec. 29 1925- 7 1,567,067
Filed July 20, 1922 Patented Dec. 29,
UNITED STATES 1,567,067 PATENT OFFICE.
JOHN F. LINDBERG, OF CHICAGO, ILLINOIS, ASSIGNOR TO RELIANCE DIE AND STAMP- ING COMPANY, OF CHICAGO; ILLINOIS, A CORPORATIONOF ILLINOIS.
CONDENSER.
Application filed July 20, 1922. Serial No. 576,227.
- useful Improvement in Condensers, of Which the following is a full, clear, concise, and exact description.
My invention relates to electrical condensers and has for its object the provision of improved adjusting mechanism for varying the capacity thereof.
The condenser of my invention includes the two complemental sides thereof and an adjusting device, individual to each side,
capable of adjusting such side along the other side in a rectilineal direction.
In the preferred embodiment of the invention the adjusting mechanism for one of the condenser sides is adapted to effect rapid adjustment of this particular condenser side to secure approximate regulation of the condenser capacity. The adjusting device for the other condenser side serves to move such other side slowly with respect to the adjusting motion to secure a fine adjustment that supplements the coarse adjustment in completing the regulation of the condenser capacity.
I will explain my invention more fully by reference to the accompanying drawing in which Fig. 1 is a sectional view, partially in elevation, of a condenser constructed in accordance with one embodiment of the invention; Fi 2 is a View in elevation of the condenser s own in Fig. 1; Fig. 3 is a sectional view on line 3-3 of Fig. 1; Figs. 4 and 5 are perspective views illustrating component parts of one of the adjusting devices; and Fig. 6 is a view in elevation illustrating another form of the invention.
Like parts are indicated by similar characters of reference throughout the different figures.
The form of the invention illustrated in Figs.1 to 5 inclusive -will be first described.
The condenser shown in these figures has one condenser'side composed of coaxial or nested cups 1 and the other condenser side composed of co-axial or nested cups 2, the cups of both condenser sides being co-axial and therefore parallel. The cups 1 are elec- I trically connected by a support 3 and the .cups 2 are electrically connected'by a support 4. The support 3 is provided with a of the
knob 13.
central hub portlon 5 that is in the nature of a sleeve which is interiorly threaded. A shaft 6 is also threaded, as indicated at 7, to
have threaded engagement with the threads upon the interior of the hub 5, the threading upon the elements 5 and 6 being preferably fine so that when the shaft is turned with respect to the hub the movement of the condenser side 1 will be slow with respect to the turning movement of the shaft which is preferably effected by turning the knob 8 upon the shaft.
The base 3 of the condenser side 1 slides upon pins 9 which are carried upon the cabis net wall l0 whereby this condenser side is prevented from rotating but is forced to move longitudinally of the shaft 6 as this shaft is turned, longitudinal movement of the shaft being prevented by the
cabinet wall portion 10 which surrounds a reduced
portion 11 of the shaft and which is interposed between a larger portion of the shaft and the head of the assembling
screw 12 that is screwed into the outer end of the shaft. Said shaft is journaled at one end in the
wall 10 at its reduced
portion 11; It is journaled at its other end in another
knob 13 which is provided upon a hollow or.
quill shaft 14 that is disposed in a
hearing 15 provided in another
cabinetwall portion 16. The
quill shaft 14 is formed with a long
spiral slot 17 whichreceives the pin 18 carried upon the
sleeve 19 that surrounds the shaft 6 that constitutes a bearing for this sleeve. The base 4 of the condenser side 2 is mounted upon the
sleeve 19 and this condenser side is prevented from turning by means of a
stationary key 20 that enters a lon
itudinal slot 21 formed in the sleeve. The
ob 13 carries an index or pointer 22 and the knob 8 carries an index or
pointer 23. The'pointer \22 moves in front of a
dial plate 24 registering marks thereon. The
pointer 23 moves in front of the registering marks formed upon the front face I In adjusting the capacity of the condenser the
knob 13 is turned to turn the
quill shaft 14 and cause the rapid rectilineal and non-rotary movement of the condenser side 2 to secure an approximate adjustment of the condenser capacity. After this ap roximate adjustment has been se-' cured t e adjustment is completed by the fine regulation that is elfected by turning the knob 8, the engaging tl reads upon the interior of the hub portion 5 and the shaft 6 being of slight pitch.
The condenser shown in Fig. 6 does not employ nested cupsbut has its sides formed of flat plates. The mechanism for adjusting the condenser sides of the structure shown in Fig. G'is similar to that which is employed in connection with the structure shown in Figs. 1 to 5 inclusive, and like parts are given similar characters of reference.
While I ,have herein shown and particularly described both forms of my invention I do not Wish to be limited to the precise details of construction shown as changes may readily be made Without departing V from the spirit of my invention, but having thus. described my invention I claim as new and desire to secure by Letters Patent the following 1. A condenser including two substantially parallel sides both mounted to move along a straight line; and an adjusting device individual to each condenser side for moving it with respect to the other condenser side, said adjusting devices being constructed to adjust the condenser sides pertaining thereto at different rates.
2..A condenser including two sides both mounted to ,move along a straight line; and an adjusting device individual to each condenser side for moving it with respect to the other condenser side, said adjusting devices being constructed to adjust the .condenser sides pertaining thereto at different rates.
tially parallel sides both mounted to move along a straight line; an ad usting device individual to each condenser side for mov- 40 ing it with respect to the other condenser side; and means for preventing the condenser sides from turning.
4:. A condenser including two substan tially' parallel sides both mounted to move along a straight line; an adjusting device individual to each condenser side for'moving it ,With respect to the other condenser side, said adjusting devices being constructed to adjust the condenser sides pertaining mounted to move along a straight line; an
adjusting device individual to each condenser side for moving 1t with respect to the other condenser side; and means for preventing the condenser sides from turn- 6. A condenser including two sides both mounted to move along a straight line; an
adjusting 'device individual to each condenser side for moving it with respect to the other condenser side, said adjusting devices being constructedtoadjust the condenser sides pertaining thereto at different rates; and means for preventing the condenser sides from turning.
In witness whereof, I hereunto subscribe my name this eleventh day of July, A. D.
JOHN F. LINDBERG.