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The Sheet-of-Water Fountain Brush: Tapered Slots Part the Bristles
Water dribbled onto the back of a brush stays in the bristles and never reaches the surface being washed.
Frank L. Brinn of Milwaukee received US 840,604, patented 8 January 1907, for a fountain brush in which "the fluid may be delivered to the longitudinal central portion of the brush in a sheet, which when the fluid is turned on at full head will serve to separate the bristles and flush the surface to be washed": slots through the block narrow toward the bristles, fed from a cylinder on top through a tubular handle, with a cup on the handle to catch what runs down.
This rung works out how the taper speeds the sheet, then cuts the slots in a scrub brush, plumbs it and compares full flow with throttled flow.
中级
About 4 hours
说明
1
1
Sheet speed from the slot
Sheet speed from the slot
正在加载 Jupyter 笔记本…
2
2
Water through a brush's back before it
Water through a brush's back before it
The embedded blueprint jets or soaks water through openings in a brush's back. Brinn shapes the openings into tapered slots so the water leaves as a sheet.
3
3
Read US 840,604
Read US 840,604
"By opening the valve at 3 to its full capacity a sheet of water will be discharged which will separate the bristles and effectively flush the surface to be washed, whether the bristles are in contact with such surface or not. By partially closing the valve at 3 the sheets of water escaping through the openings 18 are broken up by the bristles, and the water thus becomes distributed throughout the brush."
4
4
Cut the slots
Cut the slots
On the scrub brush's top mark two slots 60 × 8 mm, 90 mm apart on the centre line. Drill a row of holes in each and cut it through with the coping saw.
此步骤所需材料：
硬毛刷1 个所需工具：
台虎钳
充电式电钻
钻头套装
钢丝锯（曲线锯）
油性记号笔
直尺5
5
Taper the slots
Taper the slots
Pare each slot with chisels so its long sides close to about 1.5 mm at the bristle face and its ends open out to 70 mm. Trim the bristles along the slot line.
所需工具：
木工凿子套装
锤子
6 英寸数显卡尺
手工刀6
6
Make the manifold
Make the manifold
Cut 160 mm of 22 mm copper tube and cap both ends with fittings. File a 4 mm slot along its underside over both brush slots. Fit a tee in its middle for the handle.
此步骤所需材料：
铜管1 个
黄铜接头1 个所需工具：
切管器
锉刀（手用锉）
活动扳手7
7
Seat the manifold
Seat the manifold
Bed the manifold on the brush in silicone over a rubber gasket and strap it down with an aluminium strip and four wood screws.
此步骤所需材料：
硅酮密封胶1 个
橡胶板1 个
铝板1 个
#8 × 1 英寸木螺钉1 个所需工具：
铁皮剪
螺丝刀套装手工刀8
8
Handle, valve and drip cup
Handle, valve and drip cup
Fit 1.2 m of 15 mm copper tube to the tee, with a ball valve and hose connector at its top. Slide a small tin can, holed and sealed with silicone, onto the handle as a drip cup, and fit a short copper spout low on its side.
此步骤所需材料：
铜管1 个
球阀1 个黄铜接头1 个
PTFE 螺纹密封带1 个
马口铁罐1 个硅酮密封胶1 个所需工具：
切管器活动扳手充电式电钻钻头套装9
9
The patent drawing
The patent drawing
US 840,604 drawing sheet, public domain (expired patent).
10
10
Full flow against throttled
Full flow against throttled
Connect the garden hose. With the valve fully open, hold the brush 2 cm off a board and watch the sheet part the bristles; then close it half and watch the water spread through them. Time a litre into the jug each way.
此步骤所需材料：
园艺水管1 个
水1 个所需工具：
量杯壶
秒表直尺11
11
A sheet that sprays, sputters or leaks
A sheet that sprays, sputters or leaks
Sheet-of-water fountain brush troubleshooting.
Flow
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12
12
History and honest limits
History and honest limits
**Frank L. Brinn**, a citizen of Canada residing in Milwaukee, filed US 840,604 on 20 February 1905; it was patented 8 January 1907. His cylinder is held to the block by a plate with packing and screws, its slots feeding the slot-apertures; the handle's end carries a rubber sheath and the valve; the cup, with its spout, collects the water instead of letting it run down the handle when the brush is raised.
**Honest limits.** A slotted copper tube stands in for his cylinder, and a tin can for his cup. The notebook treats the sheet as uniform. What you see on the board is the result.
材料
12- 1 个占位符
- 1 个占位符
- 1 个占位符
- 2 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 1 个占位符
- 园艺水管10% 佣金1 个占位符
- 1 个占位符
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