US1728842A - Fly chaser - Google Patents

Description

Sept. 17, 1929. TJOSSEM 1,728,842

FLY CHASER Filed April 16, 1928 M J3 Z9 0 Q 7- o o /7 Patented Sept. 17, 1-929 UNITED; [STATES PAT. OFFICE i jgmmemssm ord nal-trimmedrowed. I if L onasiqn. I i i '7 Application filed April 16, 1928. Seria1:No. 270,3 Q7

My invention relates "to a device for remova sleeve 21. At" one end, the sleeve 21 suping flies from the edge of a screen door and ports a brush frame 22 andat its other end has for its general object to provide such a it forms a pinion 28; -The brush frame 22' device attachable to a screen door so as to is provided. with arms 24, adapted to receive be operated by swinging movement of the piecesof rag 25, hen the brush is rapidly door. rotated, the rags '25 will swing radially by a More particularly, it is my object to procentrifugal force and will actto remove the vide such a device including a brush and flies from theedge ofth do means for rotating said brush, when the door Coacting withthe pinion 231is a longitudi I0 is opened, in such a manner as to sweep flies nally slidable rack bar 26,'which' is held in from the edge of the door. engagement withthe pinion by means of a A further objectof my invention is to profingerQT', formedfon the framebar '15. One vide actuating mechanism, designed to mtiltiend of the rack bar projects toward the hinge ply the relative movement between two points of' the screen door and. is there pivoted to 1 situated rather closely adjacent either side some form 'of' mechanism for giving to it of the door hinge axis. longitudinal'motion when'the door is opened. l/Vith these and other objects in view, my in- The preferred form of. this mechanism is vention consists in the construction, arrangeshowninFigs. 1 and 2 and comprises generment and combination of the various parts ally a bell crank lever, having thearms 28 I 0f my device, whereby the objects conand 29, the former being substantially 7O templatcd are attained, as hereinafter more parallel totheplane of'the cloorwlien closed fully set forth, pointed out in my claims, and and connected to the .frame bar 15 by means illustrated in the accompanying drawings, of a, link 30 and" bracket 31 and the latter in which: being substantially perpendicular tothe door 1 is an elevation of a portion of a whenclosed andbeing connectedto the rackfl screen door and its adjacent casing, with my bar 26by means ofa link 33. The bellcrank invention attached thereto. lever is fulcrumed, as at 32,'upon a bracket Fig. 2 is a horizontal, sectional view 34, which may be formed integrally with the through the casing just above the door. framemember 17 Instead of using the bell 1 30 Fig. 3 is a. detail, sectional view taken on crank lever and link30, the link 33 might the line 33 of Fig. 2. be fastened directly to the bracket 34," as

Fig. 1 is a detail, sectional View taken on shown in Fig. 5.1;, In the latter case, as the. the line 44l of Fig. 3. door is swung open, as indicated by the Fig. 5 is a View illustrating a somewhat arrow 36, that point of the door opposedbe 35 modified and simplified form ofthe actuattweenthe rack bar 26 and the link 33 will ing mechanism. move toward the bracket 34:, thereby causing I have used the reference character 10 to the rack bar 26 to move relative to' the door. indicate generally the door casing of a hous- This advancewill cause the pinion 23 to be ing. The screen door comprises the upper rotated revolving thebrush. However, the

' 40 frame member 11 and the side members 12 amount of )niotion thus obtained is hardlyeo and 13, the latter being hinged to the casing sufficient, and furthermore, the motion is'slow 10, as at 14:. with thebeginning of the-swing andfac- My invention comprises a frame structure eelerates asthedoor swings outwardly. It including a long bar 15, adapted to be atism ar pse in employingthemechanism "413 tached as at 16 to the vertical frame members shownin Figs'l and2 to obtaina maximum 12 and 13 and a short member 17 hinged to amountofmotion at thebeginningof a swing. the lower member 15, as at 18 and adapted to i This is due to the factthat'the arm 27 imbe attached, as at 19, to the door casing 10., parts. greater longitudinal movementto the Moimted in the frame bar 15, near one end, rack, swinging faster while swinging subthereof, is a stud 20, on which is journalled stantially perpendicular to the casing 10 than 0 i y j after it has passed that position. It may be further noted that as the door opens, it not only moves toward the end of the arm 29 but it forces the arm 21 to swing in the direction indicated by the arrow 37, thus multiplying the relativemovement of the door and the rack bar. i v

Itv will be noted, by inspecting the dotted line position shown, that when the door is fully opened, the end of the arm will have swung from a position beyond the center of the casing away from the door to a position where it has passed the hinge of the door and is adjacent the door frame.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it 1s my intentlon to cover by my clalms, any modilied forms, of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In combinationwith a door and its casing to which it is hinged, a brush mounted on the door for movement to remove flies from the door, a member secured to the casing and projecting therefrom so that movement of the door will bring it nearer to ,said member, means connected to the brush to impart move ment thereto when moved relative to the door,

a bell crank lever fulcrumed on the projecting member, one arm thereof projecting toward the casing when the door is closed and i being connected to said means and a link concasing and projecting therefrom so that movement of the door will bring it nearer to said member, a pinion on the brush, a longi- I 1 tudinally slidable rack meshing with said pinion, a bell CIEHLE lever fulcrumed on the projecting member, one arm thereof projecting toward the casing when the door is closed, a link connecting said last mentioned arm to the rack and a second link connecting the other arm thereof with the door, the parts being so arranged that movement of the door may swing the bell crank lever so as to move the rack relative to the casing toadd to the movement of said rack relative to the door caused by swinging of the door relative to said projecting member.

3. In combination with a door and the casing to which it is hinged, a metal bar secured to the door in a horizontal position, a bracket hinged to one end of said bar and adapted to be secured to the casing, said bracket having a projecting member, a brush rotatably mounted on the metal bar in a position to remove flies from the door upon rotating a pinion on the brush, a longitudinally sliding rack meshing with said pinion,,a lug formed on the bar and extending over the rack to retain it in engagement with the pinion, said rack being connected to the projecting member in such a way that swinging movement of the door will cause the rack to move longitudinally of the bar and to transmit rotating movement to the brush.

Signed this 3rd day of April, 1928, in the county of OBrien and State of Iowa.

KINNEY TJOSSEM.

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